[TheForge] Broken tap

Fri Sep 27 14:20:04 2002

Yes, EDM is also an option, although we rarely had access on maintenance outages. Everything you said is right on.
Ray
> 
> From: [email protected]
> Date: 2002/09/27 Fri AM 08:19:31 EDT
> To: [email protected]
> Subject: Re: [TheForge] Broken tap
> 
> taps are pretty darn hard. what kind of a drill are you using to clean out the hole?
> 
> i have had some success using those tap removers that have three or four wires (depending on the tap) that go thru the flutes of the tap and then twisting it out. problem is that if the tap was stuck enuf to break it's usually stuck enuf to not back out.
> 
> ez outs are the most mis named thing out there. they work okay for removing a broken bolt but a tap? i wouldn't bet on it.
> 
> will edm work in aluminum?
> 
> if you get desparate you might try punching the tap out from the back side and then drilling and tapping an oversized hole. this could save that part if workable.
> 
> good luck.
> 
> bob s.
> _____________
> 
> >In my experience most broken tap removal that leaves you with a servicable hole, requires drilling. Even in large applications on steam turbine maintenance overhauls I used to collect all the EZ-outs, and other gadgets from the millwrights and have them use a tap size drill and tap out the remaining metal. Still a tricky operation, but then you aren't trying to extract the EZ-out.
> >
> >Ray
> >Cincinnati
> >> 
> >> From: "Darrell" <[email protected]>
> >> Date: 2002/09/26 Thu PM 09:16:26 EDT
> >> To: <[email protected]>
> >> Subject: [TheForge] Broken tap
> >> 
> >> How do you remove a broken tap from aluminum? I seem to recall that there is a
> >> chemical means to do this.
> >> 
> >> Darrell
> >> 
> >> http://www.machinemaster.com
> >> 
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