Hi, I was working on my motorcycle when I broke a bolt off inside a stud on my bike frame. I went to the hardware store and purchased a screw extractor and a small drill bit. To make a long story short the small bit broke inside the bolt. The question of the day now is how do i still get the bolt out with the drill bit stuck inside of it? Any ideas?
2007-04-18 16:48:28 · 19 answers · asked by skyloran 1 in Cars & Transportation ➔ Motorcycles
If there is any stub of the drill bit left, get a needle nose vise grip pliers and try to back it out. Or, you can try a sharp, small chisel or a center punch and try tapping the bolt shank out by hitting it off center to rotate it out. Use plenty of light oil to lubricate the threads. Don't try to rush the job. Take your time.
2007-04-18 16:59:42 · answer #1 · answered by Anonymous · 2⤊ 0⤋
Been there done that.
Next time don't use such a small drill bit.
When you're drilling, DO NOT use a lot of pressure on the drill. Let the drill bit do the work.
Drill slowly so you can keep the drill straight and not bend the drill bit.
Use a lot of cutting fluid (honing fluid) on the tip of the drill bit to keep it from overheating, which will ware out the bit
The only thing that will cut a drill bit is "carbide" drill bits. Not recommend in this case. The carbide bit (because of it's point) will walk around and try to cut the bolt, not the broken bit.
What has worked for me, is to grind out the broken drill bit with a carbide cutter. They come in a shape with a ball end about 1/8" diameter. Then finish the extraction with a larger drill bit and easy out (the largest size that will fit and plenty of heat to expand the frame).
http://www.snapon.com/
This is the part # for the kit. If you order it on-line,
contact Snap-On and ask for a description to make sure it's correct. "Carbide cutter kit".
VWB700A-1
Or buy the cutter from a specialty tool shop with the description I mentioned.
Good luck.
2007-04-19 04:05:54 · answer #2 · answered by guardrailjim 7 · 1⤊ 0⤋
when bolts snap of quite often they will come undone easier than when they had the head on.( no force on the thread from the head of the bolt)..so try needle nose pliers. Or grind a screw driver so the centre is missing the outside pins that are left may get enough purchase to undo it.. if there is any of the bolt outside the hole you can hacksaw a slot in it for a screw driver..
If you have an impact wrench/driver use that on the bolt..
grind a small punch up to tap it out with a hammer..
get a cobalt drill...this should drill out the HSS drill..
use a dremmel( small grinder ) & grind it out..
go to the hardware & get a mounted point grinding bit..to grind it out ( you can use mounted points in a power drill just takes longer at the slow speed)
YOU DIDNT SAY IF IT STEEL OR ALLOY FRAME..
but thats given you a few ideas to try...
2007-04-18 17:22:10 · answer #3 · answered by Anonymous · 1⤊ 0⤋
Don't try to drill into the broken drill bit. Drill bits are made out of very hard metal.
Buy a tiny drill bit. Try to buy a good one. Use it to drill out metal around the broken bit. Be very careful and take your time. After you have drilled enuf little holes around the broken bit, you will be able to twist and pull it out with a pair of small needlenose pliers.
Then carefully use the stud extractor to remove the bolt.
2007-04-19 16:13:49 · answer #4 · answered by Hawk 5 · 1⤊ 0⤋
Hi,
Hard Luck. The only solution that strikes me is to use a propane ,MAPP or other jet flame to heat the stud. Focus the flame on the end of the broken drill bit.Heat may cayse the bit to loose its hardness. A stuck bit may also work loose due to the thermal cycling so you may be able to use a nose plier to try and back it out(CCW rotation). The last effort would involve welding or brazing a hexhead bolt onto the brolen bit and then using a wrench to back it out.Do let me know how it turned out.
Regards
2007-04-20 00:48:27 · answer #5 · answered by FABRNombre H 2 · 0⤊ 1⤋
Oh boy, I just love it when that happens Not.
Well, When a bolt breaks off on me, I usually try to fix it the proper way like you tried to do but the Hardened metal extractor breaks on me! and trying to drill that out can kill a whole bunch of drill bits not to mention the cussing, ranting and raving going on too.
So, If you have a welder handy, Saint had a good answer. Joe's answer is a new one on me, never tried that one and will try next time it happens to me..
Other than that, you have to do what Jim said and drill it out Except...just drill out a size smaller than the threads and clean excess metal from threads so you dont have to buy a tap to re-tap hole.
Good Luck!
2007-04-18 17:37:15 · answer #6 · answered by JusPeachy 3 · 0⤊ 1⤋
what size is the bolt... i am guessing about a twelve millimeter. the frame is light alloy so this is serious you could weaken the frame. if the bolt was big enough weld a nut on the end of it and then use a wrench to turn the nut which is welded onto the broke bolt. if you can get a left twist drill bit it might turn itself out as it is trying to drill it
2007-04-18 16:54:09 · answer #7 · answered by Saint Lucipher 3 · 0⤊ 2⤋
If you know how to arc weld, and you have access to an arc welder, try welding a bolt or some other piece of metal that you can get a good grip on, then extract it this way. If you can weld a bolt onto it, then you might be able to get a wrench onto the newly welded bolt, and extract the mess this way.
2007-04-18 16:59:22 · answer #8 · answered by Anonymous · 0⤊ 2⤋
depending on how small the bit is, try a snake-eye tamper proof tip, or jam something (needlenose pliers? 2 brad nails?) in the grooves in the bit, grab them with vice grips and try to screw the bit out. Without seeing the situation, thats the best I can do.
2007-04-18 16:58:18 · answer #9 · answered by Joe 3 · 2⤊ 0⤋
Diamnod tipped drill bit. Will drill through anything I use them to drill through High Speed Steel Which is super hard
2016-05-18 21:09:25 · answer #10 · answered by ? 3 · 0⤊ 0⤋