Drilling a broken ezy out
04-02-2006, 08:11 PM
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Drilling a broken ezy out Well I fucked up 
and to make matters worse the screw extractor tip broke off in my drilled hole........... should have just waited till I could get my tap the next day.....
The problem with easy outs, taps, drill bits is they are hardend metal, the harder metal gets the brittle it gets. So whatever I use to drill this with will probley be more brittle then the metal i'm drilling.
I've been messing around with drilling a few spare easy outs I have to see what works best before I try and fix this. Snap on Cobalt bits don't seam to be doing much. Snap on carbide deburr bits will grind the crap outta anything steel, I suppose I could die grind what is left of the easy out.
I've found these
www.omegadrill.com
and hi-roc carbide drill bits
anybody have expirience with broken easy outs? And sorry EDM is outta the question unless I screw up my situation to the third degree.
and to make matters worse the screw extractor tip broke off in my drilled hole........... should have just waited till I could get my tap the next day.....The problem with easy outs, taps, drill bits is they are hardend metal, the harder metal gets the brittle it gets. So whatever I use to drill this with will probley be more brittle then the metal i'm drilling.
I've been messing around with drilling a few spare easy outs I have to see what works best before I try and fix this. Snap on Cobalt bits don't seam to be doing much. Snap on carbide deburr bits will grind the crap outta anything steel, I suppose I could die grind what is left of the easy out.
I've found these
www.omegadrill.com
and hi-roc carbide drill bits
anybody have expirience with broken easy outs? And sorry EDM is outta the question unless I screw up my situation to the third degree.
04-02-2006, 11:26 PM
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well you didnt say what you broke it off in, but you could always take it somewhere and have it lasered out. I know they sell tap extractors if you break one of thoes off, but an easy out might not work with thoes since it is kinda "wedged" in to the hole. good luck.
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04-03-2006, 02:42 PM
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I have removed busted off taps by impact; break a tooth
at a time, from the top, with a punch; pick it out, repeat
until you can turn what's left. Using a "zip gun" would add
power tool to your effort. But probably mung the work
some.
If you can get an O/A torch to it and heat it red you may
draw the temper enough to drill. But not a good idea if
stuck in a chunk of aluminum.
However if said chunk can be removed and heated up
well, the aluminum would expand more than the stuck
bolt & "EZ"-out, maybe let you spin them out.
A thicker welding rod, arc it and jam it in until it sticks,
is another way to go. Some of the fast freeze, out-of-
position sticks are pretty hard / tough. Plus you'll put
some thermal shock to the system.
at a time, from the top, with a punch; pick it out, repeat
until you can turn what's left. Using a "zip gun" would add
power tool to your effort. But probably mung the work
some.
If you can get an O/A torch to it and heat it red you may
draw the temper enough to drill. But not a good idea if
stuck in a chunk of aluminum.
However if said chunk can be removed and heated up
well, the aluminum would expand more than the stuck
bolt & "EZ"-out, maybe let you spin them out.
A thicker welding rod, arc it and jam it in until it sticks,
is another way to go. Some of the fast freeze, out-of-
position sticks are pretty hard / tough. Plus you'll put
some thermal shock to the system.
04-09-2006, 10:41 PM
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thanks again
Drilled the screw extractor with the omega drill bits I purchased from MSCdirect.com, I ground the area flat, tried to make a straight center punch then enlarge that center punch mark with a small round carbide bit.
Then drill a pilot hole with a omega drill, takes long *** time. Its difficult to keep the drill straight. Then I went though the hole with a cobalt bit, HSS bit will drill though hardend steel when the hole is piloted and your removing small amounts of metal. Then steped my way up to the size I needed for the heli coil and GOOD AS NEW!!!!
Drilled the screw extractor with the omega drill bits I purchased from MSCdirect.com, I ground the area flat, tried to make a straight center punch then enlarge that center punch mark with a small round carbide bit.
Then drill a pilot hole with a omega drill, takes long *** time. Its difficult to keep the drill straight. Then I went though the hole with a cobalt bit, HSS bit will drill though hardend steel when the hole is piloted and your removing small amounts of metal. Then steped my way up to the size I needed for the heli coil and GOOD AS NEW!!!!
04-09-2006, 11:29 PM
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been there.. that sucks. I had done it to a head bolt, I ended up having it lazered out because it broke of flush. If you can you can try a chizle and try to tap it in the opposite direction to make it loose its grip/grab, and it should slide out. I tried drilling the bastard out but made hardly any progress.
