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Drilling Iron
On 31 Oct 2003 09:49:21 -0800, (Dan Caster) wrote:
You have gotten lots of good advice. I will add a couple more
comments.
Anything will help for lubricant. One of the things a lubricant does
is keep things cool and obviously anything will help there. Oils also
lower the friction, but require cleaning before painting.
Using a pilot hole will help a lot. The general rule is to use a
drill that is the same diameter as the web of the next drill. And the
next drill should be the size of the hole you want ( unless the drill
motor you are using does not have enough power ). Sometimes I drill
the pilot hole almost all the way thru and then fill that hole with
oil before drilling the full sized hole if I am drilling thick
material.
You may want to put a piece of scrap wood behind the metal so that the
drill does not grab as much as it goes thru the far side.
I would also recommend you let people know where you are located.
Someone here might be willing to let you use their drill press, have a
drill press to sell, or recommend a good place to buy drills. Here in
the Seattle area Boeing Surplus sells good drill bits at good prices.
Dan
Thanks for the tips. You gave me two more questions, though. ;-)
IDAGS, but couldn't find out what the "web" of a drill bit is. Anatomy
lesson please? Also, you mentioned cleanup after the oil and before
painting: Mineral spirits?
And FWIW, I'm in Falls Church City, VA, and would consider a used
drill press (better a nice-ish old press than a new cheapie).
Thanks,
Jamie
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