{"id":5163,"date":"2024-07-30T06:36:37","date_gmt":"2024-07-30T06:36:37","guid":{"rendered":"https:\/\/broachingmach.com\/?p=5163"},"modified":"2026-09-04T15:09:44","modified_gmt":"2026-09-04T07:09:44","slug":"troubleshooting-for-broaching-operation","status":"publish","type":"post","link":"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/","title":{"rendered":"Broaching Troubleshooting: Common Failures, Root Causes and Fixes"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Broaching earns its place on the shop floor by finishing a feature in one stroke \u2014 but that same concentration of cutting work means that when something goes wrong, it goes wrong fast. A worn edge, a starved coolant line or an unstable fixture does not merely degrade the surface; it can tear the workpiece, stall the ram or snap an expensive broach in a single pass. Broaching failures are not random. Nearly every problem seen at the machine traces back to a short list of root causes: edge condition, chip evacuation, cutting parameters, system rigidity, or one of the machine&#8217;s support systems \u2014 hydraulics, lubrication, cooling and electrical control.<\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<div class=\"ez-toc-title\" style=\"cursor:inherit\">\u09b8\u09c2\u099a\u09bf\u09aa\u09a4\u09cd\u09b0<\/div>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u099f\u0997\u09b2<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Workpiece_Surface_Defects\" >Workpiece Surface Defects<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Chatter_Marks_and_Vibration_During_Broaching\" >Chatter Marks and Vibration During Broaching<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Torn_or_Ripped_Broached_Surfaces\" >Torn or Ripped Broached Surfaces<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Rough_Scratched_or_Non-Uniform_Finish\" >Rough, Scratched or Non-Uniform Finish<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Heavy_Burrs_on_the_Broached_Surface\" >Heavy Burrs on the Broached Surface<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Dimensional_and_Gauge_Failures\" >Dimensional and Gauge Failures<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Broached_Feature_Out_of_Tolerance\" >Broached Feature Out of Tolerance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Go-Gauge_Will_Not_Enter_No-Go_Gauge_Passes\" >Go-Gauge Will Not Enter; No-Go Gauge Passes<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Tool-Side_Failures\" >Tool-Side Failures<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Broach_Stalls_or_Stops_Mid-Cut\" >Broach Stalls or Stops Mid-Cut<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Broken_or_Chipped_Broach_Teeth\" >Broken or Chipped Broach Teeth<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Short_Broach_Life_Between_Sharpenings\" >Short Broach Life Between Sharpenings<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Machine-Side_System_Failures\" >Machine-Side System Failures<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Sliding_Seat_or_Ram_Moves_Unevenly\" >Sliding Seat or Ram Moves Unevenly<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Hydraulic_System_Faults_Pressure_Loss_and_Leakage\" >Hydraulic System Faults: Pressure Loss and Leakage<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Cooling_System_Failure\" >Cooling System Failure<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Electrical_and_Control_System_Faults\" >Electrical and Control System Faults<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#CNC_Single-Point_Broaching_Method-Specific_Checks\" >CNC Single-Point Broaching: Method-Specific Checks<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Broaching_Troubleshooting_Quick-Reference_Table\" >Broaching Troubleshooting Quick-Reference Table<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Prevention_The_Disciplines_Behind_a_Stable_Process\" >Prevention: The Disciplines Behind a Stable Process<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Frequently_Asked_Questions\" >\u09aa\u09cd\u09b0\u09be\u09af\u09bc\u09b6\u0987 \u099c\u09bf\u099c\u09cd\u099e\u09be\u09b8\u09bf\u09a4 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09be\u09ac\u09b2\u09c0<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Why_does_my_broach_keep_breaking\" >Why does my broach keep breaking?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#What_causes_chatter_in_broaching_and_how_do_I_stop_it\" >What causes chatter in broaching, and how do I stop it?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#Why_is_the_broached_surface_torn_instead_of_smooth\" >Why is the broached surface torn instead of smooth?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/broachingmach.com\/bn\/troubleshooting-for-broaching-operation\/#How_do_I_know_whether_the_problem_is_the_broach_or_the_machine\" >How do I know whether the problem is the broach or the machine?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\">This guide works through the failures behind most scrapped broached parts and most unplanned broaching machine downtime. Each is presented the same way \u2014 <strong>symptom, root cause, correction, prevention<\/strong> \u2014 so you can match what you see at the machine to a first move and the discipline that keeps it from returning. Before changing anything, establish three facts: what the defect looks like, when it started (first part of a batch, mid-run, after a tool change), and what changed last (material lot, regrind, parameter edit, machine repair). For polygon forms cut on lathes and mills, see our companion guide to <a href=\"https:\/\/broachingmach.com\/bn\/rotary-broaching-troubleshooting\/\">rotary broaching troubleshooting<\/a> \u2014 the failure modes overlap; the diagnoses differ.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"https:\/\/broachingmach.com\/wp-content\/uploads\/2026\/08\/hero-5163.png\" alt=\"Machinist inspecting a broached surface finish defect\" class=\"wp-image-9396\" title=\"\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Workpiece_Surface_Defects\"><\/span>Workpiece Surface Defects<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Chatter_Marks_and_Vibration_During_Broaching\"><\/span>Chatter Marks and Vibration During Broaching<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> Fish-scale or cross-hatch chatter marks on the broached surface, an audible growl or rhythmic knock during the stroke, visible vibration of tool or ram, and forms that measure erratically along the cut length.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> Chatter is a rigidity and resonance problem with four classic sources. First, <strong>too few teeth cutting simultaneously<\/strong>: teeth in the cut are set by tooth pitch against cutting length, and when too few share the load, each tooth entry is a hammer blow instead of a continuous shear. Second, <strong>spring-back of the workpiece<\/strong>: a thin wall deflects outward under cutting pressure, then springs back behind the tooth and regrips it. Third, <strong>resonance between tooth pitch and cutting length<\/strong>, where each tooth hits the same phase of the structure&#8217;s natural frequency and amplitude builds stroke after stroke. Fourth, <strong>insufficient rigidity<\/strong> of machine, fixture or tool mounting \u2014 worn guide rails, a loose clamping device or an unstable broach installation all let the edge move relative to the work.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Work through the system in order of leverage. Verify the cutting length suits the broach&#8217;s pitch \u2014 a part too short for the pitch leaves too few teeth engaged, and the fix is a finer-pitch broach or parts held in multiples. Support the rear end of a long broach, back thin workpiece walls with fixture support, and tighten and re-verify tool mounting and clamping. Repair machine guide elements showing wear. Then adjust cutting speed: because chatter is resonance-driven, a modest speed change often moves the process off the resonant point \u2014 the speed-load-finish relationships are covered in our guide to <a href=\"https:\/\/broachingmach.com\/bn\/broaching-speed-vs-feed\/\">broaching speed and feed<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Prevention.<\/strong> Make the pitch-to-length match a first-article check for every new part number, and include clamping force and tool seating in the setup checklist so rail wear is caught by trend, not scrap.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Torn_or_Ripped_Broached_Surfaces\"><\/span>Torn or Ripped Broached Surfaces<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> Tears and rips along keyway side faces or spline contours, galling streaks following the cut direction, and notch-like defects in the finished wall. Unlike periodic chatter marks, tearing looks like material pulled and ripped rather than sheared.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> Tearing is almost always an edge-condition or lubrication failure. The leading cause is <strong>adhesion on the cutting edge<\/strong> \u2014 work material pressure-welded to the edge, dragging and tearing the surface instead of slicing it. Close behind: <strong>edge wear<\/strong> (a rounded edge rubs and rips), <strong>chipped or scratched edges<\/strong> that plough a groove into every subsequent part, and <strong>chips rubbing the finished surface<\/strong> as they evacuate. A cutting fluid that has lost film strength accelerates all four.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Regrind the broach to remove adhesion, wear, chipping and scratches \u2014 a proper regrind restores edge geometry, not just sharpness; the full discipline is in our <a href=\"https:\/\/broachingmach.com\/bn\/broach-reconditioning-guide\/\">broach reconditioning guide<\/a>. When adhesion is the mechanism, change the cutting oil: a fluid with stronger extreme-pressure behavior for the same material often eliminates pressure welding at the edge. Clear packed chips from the gullets before the next stroke, and confirm the coolant stream reaches the cutting zone, not just the tool shank.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Prevention.<\/strong> Regrind on a parts-count schedule instead of waiting for visible damage, so the first evidence is a finish trend rather than torn scrap. Fluid selection and maintenance are covered in our article on <a href=\"https:\/\/broachingmach.com\/bn\/how-to-choose-the-right-cutting-fluid-for-broaching-machines\/\">choosing the right cutting fluid for broaching machines<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Rough_Scratched_or_Non-Uniform_Finish\"><\/span>Rough, Scratched or Non-Uniform Finish<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> The broached surface comes out consistently rougher than specification \u2014 matte instead of sheared-bright, with axial scratches \u2014 but without heavy tearing or burrs.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> Three mechanisms: <strong>worn edges<\/strong> that burnish instead of cut, <strong>deposit buildup<\/strong> that intermittently smears material, and <strong>chips scraping the workpiece<\/strong> on their way out of the gullets. Finishing-tooth geometry that no longer matches the print after repeated regrinds is a fourth.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Regrind to restore sharpness, remove deposits completely, evacuate chips between strokes, and change the lubricant if deposits return quickly. If finish stays rough on a freshly reground tool, have the finishing teeth checked against the original print \u2014 a broach reconditioned past its stock allowance loses its finishing geometry entirely.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Heavy_Burrs_on_the_Broached_Surface\"><\/span>Heavy Burrs on the Broached Surface<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> Large burrs along the edges of the keyway, slot or profile \u2014 especially at entry and exit faces \u2014 large enough to interfere with assembly or gauge entry.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> Burrs grow when material deforms instead of shearing. Two causes dominate: <strong>deteriorating machinability of the work material<\/strong> \u2014 a new bar lot with different composition, microstructure or hardness \u2014 and <strong>loss of edge sharpness<\/strong>, which pushes material sideways at the cut boundary instead of separating it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Check the composition, structure and hardness of the work material against the lot that ran clean, and quarantine mixed lots. Regrind to restore sharpness, and if the material change is permanent, change the cutting oil \u2014 a tougher lot needs more lubricity, not more pressure.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dimensional_and_Gauge_Failures\"><\/span>Dimensional and Gauge Failures<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Broached_Feature_Out_of_Tolerance\"><\/span>Broached Feature Out of Tolerance<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> Keyway width, spline profile or bore dimensions drift out of tolerance \u2014 oversize, undersize, tapered along the cut or bell-mouthed at entry \u2014 and overall machining accuracy declines part to part.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> Tool-side: <strong>worn cutting edges<\/strong> (each tooth cutting to a different effective size), <strong>abnormal corner wear on finishing teeth<\/strong>, and broaches reground below their stock allowance so the final size itself has drifted. Machine-side: <strong>loss of geometric accuracy<\/strong> \u2014 guide rail wear, ram alignment, fixture datum drift \u2014 and <strong>parameters unreasonable for the actual material<\/strong>. Workpiece-side: <strong>thin-wall spring-back<\/strong> closes elastically after the tool passes, leaving the feature smaller than the tool that cut it, and an <strong>eccentric pilot hole<\/strong> puts the feature off-center from the bore it lives in.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Isolate the side with two measurements: gauge the feature at entry, middle and exit of the cut (taper implicates machine geometry or progressive tooth wear; uniform error implicates the tool or spring-back), and measure a finished part unclamped (distortion that disappears unclamped is fixturing). Restore machine geometric accuracy to specification, replace or regrind the tool, and reset parameters for the material actually on the dock.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Go-Gauge_Will_Not_Enter_No-Go_Gauge_Passes\"><\/span>Go-Gauge Will Not Enter; No-Go Gauge Passes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> The functional gauge tells the story before the CMM does: the go-gauge binds or refuses to enter the finished feature, or the no-go gauge slides through \u2014 meaning the feature is oversize or distorted.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> A go-gauge that will not enter usually means <strong>eccentricity of the broached hole<\/strong> relative to the pilot, <strong>abnormal corner wear<\/strong> dragging the profile out of position, or a <strong>finish size that has drifted below the lower limit<\/strong> \u2014 a broach at the end of its regrind life finishes small. A no-go gauge that passes means genuinely oversize geometry: <strong>burr raised when the tooth face is reground<\/strong> enlarging the cut, finish size above the upper limit, or chatter hammering the form large.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Remove burrs from the cutting edge and workpiece entry, correct the pilot-hole preparation and datum surfaces so the broach starts true, and regrind corner wear. On oversize parts, resolve the burr and chatter mechanisms before touching the finishing teeth.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tool-Side_Failures\"><\/span>Tool-Side Failures<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Broach_Stalls_or_Stops_Mid-Cut\"><\/span>Broach Stalls or Stops Mid-Cut<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> The ram decelerates and stops partway through the stroke, the motor loads toward stall, and the partially cut part must be withdrawn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> A stall means cutting resistance exceeded available pull force. Four causes cover nearly all cases: <strong>insufficient machine power or tonnage<\/strong> for the cut; <strong>rising resistance from adhesion, a chipped tooth or abnormal wear<\/strong> multiplying the load a healthy tool would carry; <strong>deteriorated machinability<\/strong> \u2014 a work lot that changed composition, structure or hardness; and <strong>chip packing<\/strong> in the gullets that turns the broach into a plow. A cutting length beyond the broach&#8217;s tooth-spacing design also packs chips and doubles effective load.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Remove adhesion, chipping and abnormal wear by regrinding, and change the cutting oil \u2014 a tired fluid is a common invisible contributor. Check work material composition, structure and hardness against the proven lot. Confirm the cutting length is within the broach&#8217;s design range and clear every chip before restarting. If the cut genuinely needs more force than the machine delivers, move the job to an adequately powered machine rather than forcing it through.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Broken_or_Chipped_Broach_Teeth\"><\/span>Broken or Chipped Broach Teeth<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> A snapped broach, missing tooth tips or chipped corners found at inspection \u2014 usually with a rejected part, sometimes with damage to workpiece or fixture.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> <strong>Poor installation<\/strong> \u2014 broach misaligned in its holder or holder misaligned to the workpiece, so one edge takes the full load; <strong>chip packing<\/strong> that multiplies resistance mid-stroke; <strong>double cutting<\/strong>, where a repeated stroke re-enters a slot without clean withdrawal or indexing; <strong>hard spots or scale<\/strong> in the material; and on push broaching, <strong>excessive length-to-diameter ratio<\/strong> that buckles the tool under compression.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Verify alignment between broach, holder and pilot hole, and confirm the pilot is clean, round and to size before every setup. Clear chips completely between strokes and change the oil if chips are welding into the gullets. The loading and fracture mechanics \u2014 and the installation disciplines that prevent them \u2014 are treated in full in our article on <a href=\"https:\/\/broachingmach.com\/bn\/how-to-avoid-broach-breakage\/\">how to avoid broach breakage<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Short_Broach_Life_Between_Sharpenings\"><\/span>Short Broach Life Between Sharpenings<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> Size and finish hold for a run, but parts between regrinds keep falling \u2014 edges dull quickly, adhesion builds early, tool changes interrupt production.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> A handful of contributors: <strong>speed and feed mismatched to the material<\/strong> (too fast for the edge, or too slow in a work-hardening alloy so the edge rubs and burnishes); <strong>inadequate or wrong cutting fluid<\/strong>; <strong>adhesion wear<\/strong> in gummy materials; <strong>regrind practice<\/strong> that removes too much stock or leaves overheated edges; and <strong>material lot variation<\/strong> quietly moving the machinability goalposts. What counts as normal life per broach, material and feature is covered in our guide to <a href=\"https:\/\/broachingmach.com\/bn\/broach-tool-life\/\">broach tool life<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Re-baseline parameters against the material actually on the dock. Upgrade fluid lubricity or filtration if adhesion drives the wear. Standardize regrind practice \u2014 documented geometry, minimal stock removal, sharpening at the right interval rather than after visible damage, per our guide on <a href=\"https:\/\/broachingmach.com\/bn\/when-to-resharpen-broach-tool\/\">when to resharpen a broach tool<\/a>. Near the stock limit, evaluate reconditioning or replacement rather than shaving finishing geometry for one more sharpening.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Machine-Side_System_Failures\"><\/span>Machine-Side System Failures<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sliding_Seat_or_Ram_Moves_Unevenly\"><\/span>Sliding Seat or Ram Moves Unevenly<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> The sliding seat or ram hesitates, crawls or moves unevenly through the stroke \u2014 sometimes visible stick-slip at stroke start, sometimes only a degraded finish on the workpiece.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> Three, often together: <strong>guide rail wear<\/strong> destroying the straightness the stroke depends on; <strong>insufficient or failed lubrication<\/strong> on the sliding surfaces; and <strong>unstable hydraulic pressure<\/strong> modulating the ram drive. Uneven ram motion shows up on the workpiece as chatter and finish defects \u2014 which is why the machine is checked before blaming the tool.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Measure the guide rails; regrind or replace worn ones rather than compensating with parameters. Restore lubrication \u2014 pump working, lines clear, oil reaching every slide surface. Check hydraulic pressure against the machine specification and stabilize it before running production.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Hydraulic_System_Faults_Pressure_Loss_and_Leakage\"><\/span>Hydraulic System Faults: Pressure Loss and Leakage<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> Falling or fluctuating pull force, ram drift or hesitation, oil at fittings, hoses or under the machine, rising pump noise, heat in the hydraulic unit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> <strong>Aging hydraulic lines<\/strong>, <strong>loose fittings<\/strong> and <strong>damaged seals<\/strong> account for most external leakage. Internal causes \u2014 a worn pump, contaminated or aerated oil, a failing relief valve \u2014 show up as pressure loss without visible leaks. Because ram force is pressure times cylinder area, even modest pressure loss directly cuts rated broaching capacity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Replace aging lines, torque loose fittings, replace damaged seals \u2014 external leaks are fixed parts-first, not by topping up the reservoir. For pressure loss without leaks, check oil condition and level, bleed air from the circuit, and test relief valve and pump output. The full fault catalog is in our article on <a href=\"https:\/\/broachingmach.com\/bn\/what-are-the-common-failures-of-hydraulic-broaching-machines\/\">common failures of hydraulic broaching machines<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cooling_System_Failure\"><\/span>Cooling System Failure<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> Coolant flow drops or stops at the cutting zone, workpiece and tool run hot, smoking or discoloration appears, and edge life collapses between sharpenings.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> <strong>Low coolant level<\/strong>, <strong>blocked lines and nozzles<\/strong> packed with chips, <strong>clogged filters<\/strong>, a <strong>failed pump<\/strong> \u2014 and concentration drift, a fluid maintained too lean for the material, which behaves like a failure with no hardware fault.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Refill to level at correct concentration, clear debris from lines and nozzles, and restore aim at the cutting zone \u2014 a strong stream that misses the cut cools nothing. Replace a damaged pump and service filters to restore design flow.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Electrical_and_Control_System_Faults\"><\/span>Electrical and Control System Faults<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Symptom.<\/strong> The machine will not start, strokes end at the wrong position, limit switches or pressure sensors give false readings, controls freeze or alarm intermittently, the cycle misbehaves with no mechanical cause.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Root causes.<\/strong> <strong>Aging components<\/strong> \u2014 contactors, relays, sensors drifting out of calibration; <strong>wiring faults<\/strong> \u2014 loose terminations, chafed insulation, short circuits from vibration and coolant ingress; and <strong>control software faults<\/strong> after power events.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Correction.<\/strong> Inspect and replace aging components before they fail hard; trace wiring faults with the machine locked out; dry and seal enclosures where coolant has ingressed. For control faults, restore from the last known-good parameter backup \u2014 if the fault persists, involve a qualified technician rather than iterating on live parameters.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"CNC_Single-Point_Broaching_Method-Specific_Checks\"><\/span>CNC Single-Point Broaching: Method-Specific Checks<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Some troubleshooting terms used for CNC single-point or insert broaching do not apply to a conventional progressive pull or push broach \u2014 single-point broaching makes repeated strokes with the increment applied by the machine, while a conventional broach builds the rise into successive teeth. Confirm the process architecture before changing a program, holder or machine.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Symptom or term<\/th><th>What to verify<\/th><th>Boundary<\/th><\/tr><\/thead><tbody><tr><td>Phantom retraction or return relief<\/td><td>Confirm the programmed return move actually clears the cutting edge before the non-cutting stroke: axis direction, value, control mode, offsets, simulation.<\/td><td>A CNC\/single-point programming concept \u2014 never add an unapproved retract move to a conventional cycle.<\/td><\/tr><tr><td>Insert or holder clearance<\/td><td>Check starting bore or access slot, holder body, insert orientation, chip space and clearance through the complete stroke \u2014 entry, bottom, return.<\/td><td>Never solve interference by grinding a holder or insert without an approved supplier modification.<\/td><\/tr><tr><td>Chatter or tapered feature<\/td><td>Reduce diagnosis to rigidity and alignment first: workpiece clamping, tool overhang, holder seating, axis play, feature-to-stroke alignment.<\/td><td>A speed or depth change can hide a structural problem; restore verified alignment before parameter optimization.<\/td><\/tr><tr><td>Edge drags on return<\/td><td>Inspect the return path, programmed relief, spindle orientation, chips trapped behind the insert, elastic recovery of the workpiece.<\/td><td>Drag marks are not proof more clearance is safe; excess clearance weakens support or alters size.<\/td><\/tr><tr><td>Size or position drifts<\/td><td>Check tool wear, offset history, machine thermal state, part seating, datum repeatability, and that the cut increment is applied in the intended axis and direction.<\/td><td>Do not compensate a drifting fixture or loose holder by continuously changing offsets.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Use a controlled diagnostic sequence: preserve the last known-good program and offsets, identify the first changed variable, verify the tool and holder mechanically, dry-run where the machine builder permits, then cut a representative part \u2014 recording program revision, tool ID, holder, workpiece lot, offsets, load and inspection results. If the process stops, collides or loses position, keep the machine out of automatic production until the builder, tool supplier and process engineer have reviewed the setup; generic online parameter values cannot establish a safe stroke for a particular machine. For the toolholder&#8217;s role in the load path, see <a href=\"https:\/\/broachingmach.com\/bn\/what-is-broach-holder\/\">what a broach holder is and its uses<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Broaching_Troubleshooting_Quick-Reference_Table\"><\/span>Broaching Troubleshooting Quick-Reference Table<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The table compresses the failures above into first moves. When two symptoms appear together, treat the earlier failure in the process chain first \u2014 the secondary defect usually follows it out.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Failure<\/th><th>Most likely cause<\/th><th>First corrective move<\/th><\/tr><\/thead><tbody><tr><td>Chatter marks, growl, erratic size<\/td><td>Too few teeth cutting, thin-wall spring-back, pitch-to-length resonance, weak clamping<\/td><td>Support the broach rear end, back the workpiece wall, verify mounting \u2014 then adjust speed<\/td><\/tr><tr><td>Torn or ripped surfaces<\/td><td>Adhesion, worn or chipped edges, chips rubbing the finished wall<\/td><td>Regrind to remove adhesion and damage; change cutting oil; clear chips<\/td><\/tr><tr><td>Consistently rough finish<\/td><td>Dull edges, deposit buildup, chips scraping the surface<\/td><td>Regrind for sharpness; evacuate chips; replace lubricant<\/td><\/tr><tr><td>Heavy burrs<\/td><td>Material lot changed (composition, structure, hardness); dull edges<\/td><td>Verify incoming lot; regrind to restore sharpness<\/td><\/tr><tr><td>Feature oversize, undersize or tapered<\/td><td>Worn edges, machine geometric drift, wrong parameters, spring-back<\/td><td>Gauge at entry\/middle\/exit and unclamped to isolate tool vs machine vs wall<\/td><\/tr><tr><td>Go-gauge will not enter<\/td><td>Entry burrs, eccentric pilot hole, abnormal corner wear<\/td><td>Deburr edge and entry; correct pilot and datum preparation<\/td><\/tr><tr><td>No-go gauge passes<\/td><td>Oversize finish size, folded burrs, chatter hammering the form<\/td><td>Resolve burrs and chatter before touching finishing teeth<\/td><\/tr><tr><td>Broach stalls mid-cut<\/td><td>Adhesion or chipping raising load; tougher material lot; chip packing; low power<\/td><td>Regrind, change oil, verify material and cutting length, clear chips<\/td><\/tr><tr><td>Broken or chipped teeth<\/td><td>Poor installation alignment, chip packing, double cutting<\/td><td>Verify broach-holder-pilot alignment; enforce one-pass chip clearing<\/td><\/tr><tr><td>Short life between sharpenings<\/td><td>Parameters mismatched to material, weak fluid, regrind practice<\/td><td>Re-baseline parameters and fluid; standardize regrind interval<\/td><\/tr><tr><td>Ram or slide moves unevenly<\/td><td>Guide rail wear, failed lubrication, unstable hydraulic pressure<\/td><td>Measure rails, restore lubrication, stabilize pressure<\/td><\/tr><tr><td>Pressure loss, oil leaks<\/td><td>Aged lines, loose fittings, worn seals; pump or valve wear<\/td><td>Replace lines and seals, torque fittings; test relief valve and pump<\/td><\/tr><tr><td>Coolant flow drops or stops<\/td><td>Low level, blocked nozzles, clogged filter, failed pump<\/td><td>Refill at correct concentration; clear nozzles; service filter and pump<\/td><\/tr><tr><td>Erratic cycle, false signals<\/td><td>Aging components, wiring faults, control fault after power event<\/td><td>Replace aged parts; restore parameters from backup<\/td><\/tr><\/tbody><\/table><figcaption>First moves by failure. Match the symptom, make the first move, then apply the prevention discipline above.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Prevention_The_Disciplines_Behind_a_Stable_Process\"><\/span>Prevention: The Disciplines Behind a Stable Process<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">One pattern repeats across the corrections above: nearly every failure was preventable by one of four disciplines. <strong>First-article discipline<\/strong> \u2014 prove pilot, parameters and fixture on the first part of every new job, new tool and new material lot. <strong>Edge discipline<\/strong> \u2014 regrind on a parts-count schedule with recorded geometry, not on visible damage. <strong>Fluid discipline<\/strong> \u2014 concentration, filtration and delivery checked on a calendar and aimed at the cut. <strong>Machine discipline<\/strong> \u2014 lubrication, rail condition, hydraulic health and electrical integrity walked on a fixed routine, which is exactly what a documented <a href=\"https:\/\/broachingmach.com\/bn\/broaching-machine-preventive-maintenance-checklist\/\">preventive maintenance checklist<\/a> provides. More maintenance and troubleshooting guides are collected in our <a href=\"https:\/\/broachingmach.com\/bn\/category\/maintenance\/\">maintenance and troubleshooting category<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>\u09aa\u09cd\u09b0\u09be\u09af\u09bc\u09b6\u0987 \u099c\u09bf\u099c\u09cd\u099e\u09be\u09b8\u09bf\u09a4 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09be\u09ac\u09b2\u09c0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_does_my_broach_keep_breaking\"><\/span>Why does my broach keep breaking?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Recurring breakage is almost always an installation or chip-evacuation problem, not tool quality. Verify alignment between broach, holder and pilot hole at every setup; confirm the cutting length is within the broach&#8217;s specification; enforce complete chip clearing between strokes; and rule out double cutting, where a repeat stroke re-enters a finished slot without clean withdrawal. If breakage persists on a correctly installed tool, the cut may exceed the machine&#8217;s pull force \u2014 forcing it through only produces more broken broaches.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_causes_chatter_in_broaching_and_how_do_I_stop_it\"><\/span>What causes chatter in broaching, and how do I stop it?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Too few teeth sharing the load, thin-wall spring-back, resonance between tooth pitch and cutting length, or insufficient machine and fixture rigidity. Stop it by supporting the broach&#8217;s rear end, backing thin workpiece walls, verifying tool mounting and clamping, then adjusting cutting speed to move off the resonant point. Reducing feed alone rarely cures broaching chatter \u2014 the fix is rigidity and engagement first, parameters second.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_is_the_broached_surface_torn_instead_of_smooth\"><\/span>Why is the broached surface torn instead of smooth?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tearing means material is being pulled rather than sheared. The usual culprits, in order: adhesion pressure-welded to the cutting edge, a worn or chipped edge rubbing through the cut, chips scraping the finished wall on the way out, and a cutting fluid that has lost film strength. The correction is a proper regrind plus fresh, correctly selected oil \u2014 the prevention is regrinding on a parts-count schedule so the edge never degrades that far.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_do_I_know_whether_the_problem_is_the_broach_or_the_machine\"><\/span>How do I know whether the problem is the broach or the machine?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Three isolating checks. Gauge the feature at entry, middle and exit: taper implicates machine geometry or progressive tooth wear; uniform error implicates the tool or spring-back. Measure a finished part unclamped: distortion that disappears unclamped is fixturing. Then swap a known-good tool into the same setup \u2014 if the defect follows the tool it is edge condition; if it stays with the machine, look at rails, hydraulics and alignment.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If a failure on this list has your line stopped, send us the part drawing, material and symptom. Our applications engineers work through these failures daily and will tell you honestly whether the fix is a setup change, a reconditioned tool from our <a href=\"https:\/\/broachingmach.com\/bn\/broach-tools\/\">broach tools<\/a> range, or a machine-side repair.<\/p>","protected":false},"excerpt":{"rendered":"<p>Broaching earns its place on the shop floor by finishing a feature in one stroke \u2014 but that same concentration [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9396,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[23,35],"tags":[],"class_list":["post-5163","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-broaching","category-maintenance"],"_links":{"self":[{"href":"https:\/\/broachingmach.com\/bn\/wp-json\/wp\/v2\/posts\/5163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/broachingmach.com\/bn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/broachingmach.com\/bn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/broachingmach.com\/bn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/broachingmach.com\/bn\/wp-json\/wp\/v2\/comments?post=5163"}],"version-history":[{"count":10,"href":"https:\/\/broachingmach.com\/bn\/wp-json\/wp\/v2\/posts\/5163\/revisions"}],"predecessor-version":[{"id":9402,"href":"https:\/\/broachingmach.com\/bn\/wp-json\/wp\/v2\/posts\/5163\/revisions\/9402"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/broachingmach.com\/bn\/wp-json\/wp\/v2\/media\/9396"}],"wp:attachment":[{"href":"https:\/\/broachingmach.com\/bn\/wp-json\/wp\/v2\/media?parent=5163"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/broachingmach.com\/bn\/wp-json\/wp\/v2\/categories?post=5163"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/broachingmach.com\/bn\/wp-json\/wp\/v2\/tags?post=5163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}