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Drilling through metal for broken bolt on control arm using a cobalt bit not working
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<blockquote data-quote="shurur" data-source="post: 16438999" data-attributes="member: 113850"><p>I just use green grease...but yes it has to be something not binding.</p><p></p><p>Worse case you can use as small a bit as possible and hog around the broken bit, then pluck it out. Then just use a threaded insert (E-Z Lok).</p><p></p><p>Helicoil makes those as well and it fixes situations where you had to hog more material out. It also makes a much better fix that a helicoil.</p><p></p><p>I did this on my audi where the tensioner bolt sheared at the block. Folks were telling me I would have to replace the block and other stupid shit ideas.</p><p></p><p>When you drill the hole for the inserts, make progressive size drillings centered on the original hole where you plucked the broken bit from.</p><p></p><p>Anyway..that is the panzer fix for this problem.</p></blockquote><p></p>
[QUOTE="shurur, post: 16438999, member: 113850"] I just use green grease...but yes it has to be something not binding. Worse case you can use as small a bit as possible and hog around the broken bit, then pluck it out. Then just use a threaded insert (E-Z Lok). Helicoil makes those as well and it fixes situations where you had to hog more material out. It also makes a much better fix that a helicoil. I did this on my audi where the tensioner bolt sheared at the block. Folks were telling me I would have to replace the block and other stupid shit ideas. When you drill the hole for the inserts, make progressive size drillings centered on the original hole where you plucked the broken bit from. Anyway..that is the panzer fix for this problem. [/QUOTE]
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Drilling through metal for broken bolt on control arm using a cobalt bit not working
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