Date: Tue, 14 Jun 2005 17:02:58 +0100 From: "John Hudson" <mypcnospam.com> Subject: Re: Extracting Recessed Bolt (Broken, Too!)
"Dave Hinz" <DaveHinznospamcop.net> wrote in message news:3h88hmFfli08U1nospamvidual.net... > > Well, there are several approaches for a stuck fastener. The key is to > preserve options, and to do that it's imperitive that the hole be > drilled in the exact center of the stuck fastener. First, drill with > the left hand drill bit, of a diameter of the appropriate easy-out tool > for the fastener you're trying to remove. If you're lucky, the heat, > torque, and kroil that you've put on to soak will act together and it'll > come out. If you're less lucky, then you can use the ez-out which is > kind of a left-twist, tapered corkscrew kind of a deal. It wedges into > the hole & digs in, hopefully bringing the fastener out with it. Dave I do not understand your reference to a left handed drill bit. You use a normal twist drill of the correct size and then a special bit for the removal of the screw. These bits had the trade name of Ezy Outs in the UK many years ago. The proper name is Screw Extractors. Once in the hole in the broken screw you turn them anti clockwise and they lock into the screw and out it comes. In the real world that does not happen. This thread (thats clever!) reminds me of some of the struggles I've had and thinking about it makes me wonder if such a thing was ever made for LH threads, I rather think not. Of course removiing broken taps is the hard one especially if its in tool steel.
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