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Author Snapped a drill bit off inside a bolt
Sean-B
Member

Registered: 1st May 07
Location: Wolverhampton Drives: 200SX S14a
User status: Offline
27th Jan 10 at 21:16   View User's Profile U2U Member Reply With Quote

Was drilling out a bolt, started with a 2mm drill bit. Was most of the way through and then stupidly something made me jump and the bit snapped in the hole.

Is there a different type of drill bit that will drill through it? It's just a cheap normal drill bit that has snapped off.

Sean-B
SnK
Member

Registered: 2nd Mar 09
Location: Yeadon, West Yorkshire
User status: Offline
27th Jan 10 at 21:23   View User's Profile U2U Member Reply With Quote

Is the bolt inset? Will monkey pliers not help you twist it out? What we do sometimes is get a mini hacksaw and cut a straight side into it, so you can get a flat head screwdriver on it and twist it out. Alternatively, spur point drill bit?
barneykarl
Member

Registered: 29th Jul 06
Location: Stevenage
User status: Offline
27th Jan 10 at 21:33   View User's Profile U2U Member Reply With Quote

Always a sod when this happens where is the bolt located, drilling into a broken drill bit will be a pain been there done that no easy answer you will have to try other ways to remove it can you heat it up and get grips on it.
alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
User status: Offline
27th Jan 10 at 22:02   View User's Profile U2U Member Reply With Quote

I'd try a widia tipped drill if there's no way of removing it. Where's the bolt located?
Fro
Member

Registered: 20th Jun 06
Location: Rainham, Essex Drives: A3 2.0TDi Sport
User status: Offline
28th Jan 10 at 10:07   View User's Profile U2U Member Reply With Quote

how comes you were trying to drill it so deep?
harrisp
Member

Registered: 15th Dec 07
Location: Derbyshire
User status: Offline
28th Jan 10 at 17:10   View User's Profile U2U Member Reply With Quote

Is the drill bit tight in the hole? I had a similar problem, hit the bolt a few times with a hammer then pulled the remaining part of the drillbit with a strong magnet.
Sean-B
Member

Registered: 1st May 07
Location: Wolverhampton Drives: 200SX S14a
User status: Offline
28th Jan 10 at 21:37   View User's Profile U2U Member Reply With Quote

Done it with a dremel, then drilled and re-tapped the hole.

 
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