I’m replacing a dead bolt lock on an old door, but two of the screw-heads holding the lock were filed at opposite ends, so I can’t use a screw driver to take them out. Are there any tips on how to remove the screws? The only thing I can think of is using a dremmel to create a new groove, but is there an easier way?
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What I used to do in my days as a mechanic was keep an old broken hacksaw blade, grind most of the teeth away except for a few, and use that to cut a slot for a flat head screwdriver. You could also drill a hole in the screw and use a screw extractor if you have one of those handy. All else not available to you, the screw's probably not that tight, a small, sharp chised angled rightly and tapped lightly can usually get the screw turning.
Fought with too many of those as a mechanic, why I are a carpenter now.
Good luck! :)
If your real lucky maybe a sharp small chisel will get the screw moving. You need to dig into the screw head with a small pointed something, then tap it very gently counter clockwise. Sometimes it works & sometimes it doesn't.
Or, centerpunch it accurately and drill the center of the head with a bit slightly larger than the thread diameter. Probably 3/16 would take the head right off leaving just the shank of the screw.
Joe H
not sure if this will help, but came across it and filed it away as maybe useful
have never used one
http://www.gpistore.com/subcatmfgprod.asp?0=249&1=268&2=-1bobl Volo Non Voleo Joe's BT Forum cheat sheet
If you have an old file (three corner often works well) and a bench grinder you should be able make a screw extractor of sorts. Files are harder than chisels and when dull useful for all sorts of things. Let me know if you need further info.
Jon
ps, let us know what worked, thanks
try an automotive supply place for a device called an easy-out. you drill a hole then drive in a lefthand thread tap until the screw/bolt starts turning itself out
dont know how small they go, but know they work great on engine bolts
Are you sure they have been filed or are they the tamper-proof type? They do make a tip for those but unless you are working with them a lot you probably do not want one. The other guy's suggestions should do it.
Yes. No doubt they are filed. Thanks for you responce. I'll post what ended up doing the job
A trick I used quite a few times when boat building was to drill a shallow hole in the head using a drill just smaller than a #2 square drive. Then tap the square drive bit in for a custom fit. Wouldn't work with drywall screws, but should work with your average hinge screw.
Edited 4/30/2003 1:38:26 PM ET by VANDERPOOCH
Just a brief note to thank all of you for your tips, and to let you know that I was able to remove the screws using a chisel and a hammer. I tapped on the edge of the screw heads to make them turn. After a couple of turns I was able to grab the heads with pliers to finish unscrewing them. Thanks again!