| Gallery, Projects and General > How do I?? |
| Broken Tap Removal??? |
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| unc1esteve:
Jonny, Will you explain the break whats left of the tap (without damaging the part) procedure? And the tools used? Thank you. oldgoaly, I have had severe asthma all my adult life. The price of the Rocklinizer put me into a acute attack. |
| oldgoaly:
Unc, that price is 500+ bucks off the original asking price! :bugeye: I broke a tap off and have join the hunt for a tap zapper or making one of these work. Rocklin the EDM looks like part of a portable drill press for the stand, the working mechanism is like a tattoo machine. I also have a 314 I'll attach a couple of pics so you can break it down electronically. I replaced one cap on it metalized polyester type. |
| vtsteam:
Last broken tap I had, I lucked out. hit it a few times with a punch and then rotated a super magnet over it -- that unscrewed a few bits, and it was then clear. It was in an aluminum casting however, and the broken tap was close to the surface. I saw a broken stud removed in a HSM article by laying a nut over the hole and welding through the nut hole a plug weld to the stud. Then the nut became the bolt head and the stud was unscrewed -- the heat and cooling from the weld supposedly also helped loosen the stud. 6-32 is way too small for that method, I guess. |
| sparky961:
It may be a bit small for the job, but I have to second the idea of smashing it to bits in the hole. I have had luck with a cold chisel and another tap ground to a point. Take your time and smash little bits at a time off. You may find if through hole that at some point you can force it through. It may damage the hole a bit but it can usually be chased later and still hold a fastener. |
| Fergus OMore:
Isn't it great to enjoy a laugh? Seriously, there several ways to try( being the operative word) to do it. One is to make a little dam with Plasticene or similar and put in nitric acid and stir the chemically changed bits out. It's long and tedious and-- you may not have a tiny drop of the stuff needed. Again, you can wedge a three fluted tool to fit the broken flutes- and chance your luck by twisting it loose. Again, you can use an arc welder or mig/mag and carefully weld an extension and go from there. Again, you can use a tiny carbon arc and destroy the core of the tap. Sheer bloody brute force is an added skill. Again, you can throw the thing at the neighbours cat and make another one. Of course, you could regrind the next worn tap- which quixotically be blunter than the one which broke in the first place. Regards Norman |
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