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Old 01-23-2009, 07:40 AM   #1
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Great drill depth stop

Last Monday I took my new (to me) AS to the factory service center for the refrigerator recall and took the tour while I was there. Very interesting and well done. The guide showed us a tool they use that I thought was great.

I’ve often used electrical tape on a drill bit to mark the depth of a hole I wanted to drill. I’ve also just pushed the tape up and drilled too deep. The tour guide showed us a drill and what they use for a positive stop. They had the bit in the chuck of the drill and put a piece of bare copper wire beside the bit and between two of the chuck jaws. They then bent the wire over 90 degrees and started to wind it around the bit. Next they held the wire taut and started slowly running the drill to wind the wire snugly around the bit and kept going until they had only the length of the bit exposed that they wanted through the material. It gave a very positive stop that wouldn’t get worn away with a series of uses and by winding it with the drill running forward, it wouldn’t catch when it got to the surface. The end product looked like a spring in case you're having trouble visualizing. The trimmed end could be dressed with a file to smooth it and reduce any surface marring.

Probably old news to some but hopefully will help others.

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Old 01-23-2009, 08:46 AM   #2
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These work well also

Drill Stops

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Old 01-23-2009, 09:01 AM   #3
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Thanx for the tips. I always like being aware of things like this.

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Old 01-23-2009, 02:35 PM   #4
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I second what moosetags said, Thanks!
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Old 01-23-2009, 03:13 PM   #5
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Originally Posted by Aerowood View Post
These work well also

Drill Stops
Never seen those, maybe I'm dense today but how do they work?

On edit, I got a larger photo - I see how it works. Looks handy.
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Old 01-23-2009, 07:15 PM   #6
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For years I've used corks from wine bottles to stop the drill bit from going too deep. Chuck the bit in the drill motor, put the cork in a vise, drill through the cork. If one is not enough, use another and cut it to depth. It's really easy now that they use synthetic corks.
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Old 01-23-2009, 07:53 PM   #7
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Rivet Great Tip

Thanks. I have always used tape, so I know what you are talking about. It does blow away any sawdust in wood, though.
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Old 01-24-2009, 12:45 AM   #8
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Hi, I have been drilling holes in brand new cars since 1968 and the best drill stops were made from rubber vacuum, or fuel hoses. They are cheap, cut to any length you want, and won't damage paint.


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