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Thread: Removing sheared bolts
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2nd Dec 2018, 11:47 PM #1Most Valued Member
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Removing sheared bolts
We've probably all come across the situation of a sheared off bolt. This clip shows an easy simple way of centring the drill bit. https://www.youtube.com/watch?v=dJfkCj3FWBs
Unfortunately, it doesn't show how to do one that has sheared of flush!!!
KrynTo grow old is mandatory, growing up is optional.
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3rd Dec 2018, 10:04 AM #2
Good one , Kryn.
I see myself on the lathe drilling out a series of cap head bolts for such an eventuality.
I wonder how hard are the cap heads?
Grahame
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3rd Dec 2018, 11:32 AM #3Most Valued Member
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You could use stainless steel cap screws Grahame.
Chris
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3rd Dec 2018, 04:09 PM #4Member: Blue and white apron brigade
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If the bolt is large enough I've been able to grind the top flat and just centre punch and drill a hole in the broken bolt for an easy-out.
Headaches start when the bolts are small or are broken at an angle just below the surface, then I proceed was follows
If the part with the broken off bolt contains a number of coplanar bolt holes I have used the gasket, or the opposite side of the part that shows the bolt pattern, to accurately mark and drill out in/on a piece of 1/4" thick steel the position of any two (unbroken) bolt holes. Also mark out where the broken bolt hole is but drill that to suit an easy-out. Then bolt that piece of steel to the two unbroken bolt holes and the broken bolt hole should like up accurately so you can use that as a drill guide to drill a hole in the bolt for the easy-out.
If there are no other bolt holes available a piece of metal can be sometimes be clamped to the workpiece with the same effect.
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3rd Dec 2018, 06:21 PM #5
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3rd Dec 2018, 08:47 PM #6Most Valued Member
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What do you mean, the wording is all around the place, if new australian I apologise.
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