Tap and Die - Honda Forum / Acura Forum

vietshorThi · 04-18-2005, 08:15 AM

anybody have experience with tap and dies? if you're unfamiliar with the term, it drills into a broken bolt and rethreads it. Then it pulls it out. i have a broken bolt in my lower control arm and i figured to try this out. if you know the instructions to use it, i'd sure appreciate it

civEXturbo · 04-18-2005, 08:42 AM

Tap and Die sets are used for making threads in fresh metal mainly. If you need to remove a broken bolt, try reverse drill bits or bolt extractors. Go to your local hardware store, they shold have an assortment of sizes to remove most broken bolts.

vietshorThi · 04-18-2005, 12:52 PM

oh really, well a friend of mine works at ace hardware and he told me about tap and die, and said it could be used to pull out a broken bolt, so iuno

Prelude94' · 04-18-2005, 02:34 PM

Quote:

Originally Posted by vietshorThi

oh really, well a friend of mine works at ace hardware and he told me about tap and die, and said it could be used to pull out a broken bolt, so iuno

dont try one of those extractors. I had the same problem as you. i tried on and it didnt work at all. a tap and die would work better.

vietshorThi · 04-20-2005, 12:45 PM

thanks bro

lean · 04-20-2005, 10:59 PM

Just for clarification, there isn't one tool called a "tap and die." That name just refers to a kit that's commonly sold as a set of taps and dies. A tap is used like a drill bit and makes threads inside a hole. The dies are used to spin around an object, like a messed up bolt or rod, to create new threads.

For your problem, I would either get an extractor, of if you want to do it with parts you might already have, drill out the broken bolt with a heavy duty bit that will remove as much of the bolt as possible, but not chew into the threads. Then use some needle nose pliers to pick the thin walls of metal out of the threads. Then, if the threads were not damaged or very slightly damaged, run the same sized tap through the threads to clear out any crap left over. Don’t ask me if I’ve done this before. :bh

Prelude94' · 04-21-2005, 10:35 AM

Quote:

Originally Posted by lean

Just for clarification, there isn't one tool called a "tap and die." That name just refers to a kit that's commonly sold as a set of taps and dies. A tap is used like a drill bit and makes threads inside a hole. The dies are used to spin around an object, like a messed up bolt or rod, to create new threads.

For your problem, I would either get an extractor, of if you want to do it with parts you might already have, drill out the broken bolt with a heavy duty bit that will remove as much of the bolt as possible, but not chew into the threads. Then use some needle nose pliers to pick the thin walls of metal out of the threads. Then, if the threads were not damaged or very slightly damaged, run the same sized tap through the threads to clear out any crap left over. Don’t ask me if I’ve done this before. :bh

I tried a extractor. It didnt come close to working. but maybe thats just me.

quantumtheory · 04-21-2005, 12:50 PM

Hey just figured id add my 2 cent here. Im a machinist and I deal with this on a daily basis. 1st off those reverse thread bits will only work on something that is not torqued into place. It sounds like you have two options here. 1 is to get yourself a good set of carbide drill bits and start out by drilling the center out of the stud with a 1/8 bit, continue to bore out the center with the next few bits untill the broken stud comes loose or untill you reach the high point of the threads. If this is not an option for you then the other option is to high build weld from the stud out and weld a nut to the weld build up. This will enable you to wrench out the broken stud.

Prelude94' · 04-21-2005, 02:55 PM

Quote:

Originally Posted by quantumtheory

Hey just figured id add my 2 cent here. Im a machinist and I deal with this on a daily basis. 1st off those reverse thread bits will only work on something that is not torqued into place. It sounds like you have two options here. 1 is to get yourself a good set of carbide drill bits and start out by drilling the center out of the stud with a 1/8 bit, continue to bore out the center with the next few bits untill the broken stud comes loose or untill you reach the high point of the threads. If this is not an option for you then the other option is to high build weld from the stud out and weld a nut to the weld build up. This will enable you to wrench out the broken stud.

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