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This is an simple device with a hex shank for cordless
drills. It has two opposed chipping bits with hard
surfaces
(maybe cobalt tipped) with a space in the center.
The bit can be placed over a nail that you want to
remove
and by spinning the drill, some wood is chipped out
around
the
nail, which then makes it easy for a claw hammer or
other
nail puller to grab the head of the nail and pull it out.
Since the nailpullerpreparer won't be stabilized in the
center, it may be necessary to include an outer ring that
runs on a bearing, doesn't spin and has three short
teeth.
This would stabilize the tool.
Comes in a few different sizes to accommodate a wide
variety of nails and woods.
Maybe I'll send this to Sears/Craftsman.
reminds of this, pretty close
http://www.baptist....id=25&sid=157&pid=3
[zeno, Nov 24 2011]
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Make it adjustable, rather than needing multiple sizes; a simple 'drill-chuck' style system should do. The stabiliser ring will need to be spring mounted for the downwards 'push'. But a great idea! |
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//has three short teeth.// |
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So, this will leave three short teethmarks in the
wood. |
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Isn't it easier just to grab a chisel (or screwdriver)
and give it a couple of whacks with you hand to
create indentations either side of the nailhead> |
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Isn't it easier just to grab a small (or large) amout of plastic explosive and give it a whack to create an indentation all around what's left of the nailhead ? |
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//So, this will leave three short teethmarks in the wood.// |
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Yes. Not only that, but it leaves a crater around the nail.
We don't care. We want to either remove the piece wood
or we'll patch the damage. |
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//Isn't it easier just to grab a chisel (or screwdriver) and
give it a couple of whacks with you hand to create
indentations either side of the nailhead>// |
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That's what I usually do, but I've not found it easy at all.
But it is easy to damage a chisel on the nail or hurt your
fingers when you're in a rush to get to the real work. |
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A common scenario (for me anyway) is to make an
indentation, try to pull the nail, find the craters aren't big
enough, make more room then try to pull the nail but
damage the nail head, go back and and forth a couple of
times and finally realize the claw hammer is now useless on
the nail and remove the nail with vise grips. |
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All of this is time consuming. |
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This tool is just a solution that I think would be effective. |
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[zeno], I like your link. That tool looks quite similar to what I
had in mind, even though its purpose is different. |
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This is just a small hole saw. If you want one with carbide
teeth, try a Rotabroach. |
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