Bolt removal questions.

[undercut]

1. Heat the nut up, but not red hot or you can distort it and wreck the threads, this will not happen on most bolts but if it does you will be forced to cut it off.

2. Place a candle on the end to melt the wax. The "wick effect" will suck the melted wax into the threads and lube it up enough to remove easily.

This sounds a little wierd but trust me it does work.

Think the guy who welded the nut doesn't like broken off bolts ??? ....

That wax trick is slick as slick can be. Never heard of it until now ....

[zoama]

Think the guy who welded the nut doesn't like broken off bolts ??? ....

....

Must be all the oxididation... or having to make up new words.

[undercut]

Must be all the oxididation... or having to make up new words.

Wait, what, no, wait a second, oxididation isn't a word? But he used it with such conviction! LOL I do that all the time. Dictionary would be twice as thick if it were based on me ....

[Rodsmachineshop]

I get so many broken bolts and studs at my shop , that the joy of a machine shop , i do a lot of heli coiling

[EchoSixMike]

Yeah, my local EDM place loves me. S/F....Ken M

[SeanMurphy265]

Kano Aerokroil This is the best penetrating oil! I sold fasteners for a few years, and I would give a can away and the next week they would order cases.

An easy way to remove bolts is to tig weld a nut to the broken head. The heat will help loosen the bolt. It takes a lot of practice, but it's quicker than drilling and using easy outs.

[EchoSixMike]

MIG welders work also, at least for the larger fasteners. For the small stuff, yeah, TIG is about the only choice. S/F.....Ken M

[everlastsupport]

Kano Aerokroil This is the best penetrating oil! I sold fasteners for a few years, and I would give a can away and the next week they would order cases.

An easy way to remove bolts is to tig weld a nut to the broken head. The heat will help loosen the bolt. It takes a lot of practice, but it's quicker than drilling and using easy outs.

I have used something like silikroil. It is amazing stuff for sure. The orange can. Will have to try areo kroil

[undercut]

I get so many broken bolts and studs at my shop , that the joy of a machine shop , i do a lot of heli coiling

Just looked up heli coiling. Pretty cool technology. You use this so that you can use the same bolt for the hole instead of tapping a new, larger threaded hole?

[zoama]

Just looked up heli coiling. Pretty cool technology. You use this so that you can use the same bolt for the hole instead of tapping a new, larger threaded hole?

That's right... it's also used on new aluminum parts where the threads will be under heavy load. Your local auto parts store should have reasonably priced kits with everything you need in single sizes. Most have 10 helicoils (may not have the drill bit).
http://www.ebay.com/sch/i.html?_trks...l+kit&_sacat=0

[DaveO]

I had to read up on heli coils too, interesting stuff. If you use them to replace damaged threads, do they have the same torque capacity as the original threads?

[Trip59]

Meh, don't like helicoils...

http://www.timesert.com/html/faq.html

or better

http://alcoafastener.thomasnet.com/c...ts-reg-inserts

[Brian Ski]

Meh, don't like helicoils...

http://www.timesert.com/html/faq.html

or better

http://alcoafastener.thomasnet.com/c...ts-reg-inserts

The helicoils work well. Better if it is not a bolt that is inserted and removed often. They have been around for a long time. I have ran across the timeserts. Looks like they are the new school way of replacing threads.

Thanks for the candle idea will have to give it a shot next time. I have tried welding the nut in place. Mostly with bad results, but will keep trying. I know I will run across more froze bolts.

One thing I have learned over time. If the bolt feels like it is going to break... stop and give it some help. Usually heat will help a lot. Once you break it, it gets a lot harder to get it out.

[undercut]

I had to read up on heli coils too, interesting stuff. If you use them to replace damaged threads, do they have the same torque capacity as the original threads?

As Trip59 says, there seems to be a few alternatives that are out there. I think I was reading a snippit from Acme(?) stating that their alternative had better torquing capability. As with everything, it all depends on your application. Happy hunting!

[DaveO]

The Time-Sert FAQ says they won't attest to torque capacity because of there is too much variability in installation. But then they say this:

"TIME-SERT will state that if the thread repair is done correctly and with the proper length of insert used for the application e.g. the insert is the same length of the original thread engagement, the result should be a hole that should match the original torque specification of the hole."

[arthur]

I get so many broken bolts and studs at my shop , that the joy of a machine shop , i do a lot of heli coiling

try using extractalloy rods, their slick as hell. just put a nut over the hole stick the rod down to the stud that broke off and weld it up through the nut do a swirley over the top of the nut grab a wrench and back it out. the first time i used it it blew me away it dont bother the threads in the hole at all.dont remember who makes it.

[everlastsupport]

Hi-alloy extractor is one brand. Seem it would make the job easier, but has a cost. If this is a common event in the shop probably worth it. Or TIG/torch round stock and a nut on.

[ogorir]

I've done that a handful of times with a 3/32 6011. it works on 3/8" and larger bolts.