I though I'd start this topic for all the guys out there who twisted that screw once too many and snapped the heads off. Discuss the various ways you remove screws errr studs.
Possible Methods
Techniques
Tips
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Now You've Done It! (Broken Screws)
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Now You've Done It! (Broken Screws)
by LarryC39 on Sun Jul 29, 2007 2:11 pm
#LC
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Lubrication
The right kind of slippery.
-Quote from The Book of DSM'13
I'm Moving! http://highwaydivides.com/
Lubrication
The right kind of slippery.
-Quote from The Book of DSM'13
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LarryC39 - Wiki Mod
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Re: Now You've Done It! (Broken Screws)
by SirMarbelot on Sat Aug 11, 2007 7:09 am
I'll need to do this with my Ruleta.
Francis
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Re: Now You've Done It! (Broken Screws)
by 3liteguy on Sat Aug 11, 2007 8:49 am
Well the screw I broke off in my AGA I just drilled out the reamianing screw. I was fortunate enough to have it brake off in the visor door so I was able to carry the door down to my drill press and drill it out there. I have yet to retap the hole however.
3lg
3lg
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Re: Now You've Done It! (Broken Screws)
by EdT. on Sat Aug 11, 2007 10:08 am
It's really not difficult at all. I'll bring my tap and dies to the next meet and do a demo. 
Ed
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"There are days like that. Everyone you meet is a dope. You begin to look at yourself in the glass and wonder." - Philip Marlowe
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"There are days like that. Everyone you meet is a dope. You begin to look at yourself in the glass and wonder." - Philip Marlowe
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Re: Now You've Done It! (Broken Screws)
by SirMarbelot on Mon Aug 13, 2007 6:10 am
Is a tap something like a drill bit that impresses the threads onto the sides of the hole it bores?
Francis
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Re: Now You've Done It! (Broken Screws)
by LarryC39 on Mon Aug 13, 2007 6:56 pm
Yes. A tap is a drill that makes threads and is easy to break.
Ok, a couple questions for the drillers in the field. What is the best way / how do you get the drill centered on the broken screw? Also, do you drill oversized and tap a larger hole, or drill undersized and tap the existing screw? I take it you guys don't bother with screw extractors?
Ok, a couple questions for the drillers in the field. What is the best way / how do you get the drill centered on the broken screw? Also, do you drill oversized and tap a larger hole, or drill undersized and tap the existing screw? I take it you guys don't bother with screw extractors?
#LC
I'm Moving! http://highwaydivides.com/
Lubrication
The right kind of slippery.
-Quote from The Book of DSM'13
I'm Moving! http://highwaydivides.com/
Lubrication
The right kind of slippery.
-Quote from The Book of DSM'13
-
LarryC39 - Wiki Mod
- Posts: 5567
- Joined: Sat Jul 07, 2007 10:43 pm
- Location: Detroit, MI
Re: Now You've Done It! (Broken Screws)
by EdT. on Wed Aug 15, 2007 1:06 am
Sir Marbelot - Yes, exactly.
Larry - Yeah, they are brittle (hardness = brittle).
Quite often I'll have to dress up a broken screw with the dremel to get a suitable landing area for the drill bit. And then I bisect the target area with a small cold chisel and then use a center punch to mark where I'll start with a small drill bit. It sounds like a PITA, but it's really not and it makes life much easier to start off the hole exactly where you want it instead of 'close'.
I'll usually try a screw extractor first before resorting to drilling out the entire screw. If I'm successful at getting the screw out, then I'll run a tap through it all the same just to clean the threads. If I end up drilling it out, then I'll go oversize. Quite often the old screw body will pop out when you're stepping up through the drill sizes and there's not much material left in the threads. I used to have this reverse pitch drill bit set that was great at torquing out broken screws, but they would break quite often itself and I never replaced them.
Larry - Yeah, they are brittle (hardness = brittle).
Quite often I'll have to dress up a broken screw with the dremel to get a suitable landing area for the drill bit. And then I bisect the target area with a small cold chisel and then use a center punch to mark where I'll start with a small drill bit. It sounds like a PITA, but it's really not and it makes life much easier to start off the hole exactly where you want it instead of 'close'.I'll usually try a screw extractor first before resorting to drilling out the entire screw. If I'm successful at getting the screw out, then I'll run a tap through it all the same just to clean the threads. If I end up drilling it out, then I'll go oversize. Quite often the old screw body will pop out when you're stepping up through the drill sizes and there's not much material left in the threads. I used to have this reverse pitch drill bit set that was great at torquing out broken screws, but they would break quite often itself and I never replaced them.
Ed
----------------------------
"There are days like that. Everyone you meet is a dope. You begin to look at yourself in the glass and wonder." - Philip Marlowe
----------------------------
"There are days like that. Everyone you meet is a dope. You begin to look at yourself in the glass and wonder." - Philip Marlowe
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