On Wed, 08 Sep 2010 21:04:35 -0700, Bob La Londe wrote:
"Rich Grise" wrote in message
On Sun, 05 Sep 2010 11:13:04 -0700, Bob La Londe wrote:

I have been bouncing around an idea for a specialty screw less vise.
I've
got the shape and design figured out, and I think I have the machine
processes to make it figured out. I'm still struggling with the exact
best
way to drill the pin holes, but that's not my hold up. I'm trying to
decided what material to make it out of. The cheap steel that the Harbor
freight vises are cast from machines nicely, but I don't know what it is,
and I'm not sure it would be rigid enough. I could do it with aluminum
easily enough, but I really don't think that would work very well. If
the
design works I can see myself using this vise for many many years, and
even
custom designing it for other machines. It doesn't have to withstand
tons
of holding force, but it should be able to handle upto 100 lbs of holding
force with minimal distortion. I know, make it heavy, but the idea is
really geared towards mini machines, so heavy really is not an option. I
suspect a 75 lb vise would cause or contribute to motor stalling on some
of
these machines.

A36 steel for the fundamental structure, and hardened O1 for the jaw
inserts.

Hmmm... I thought various tool steels to begin with, but weight is a killer
on mini machines.

Composite? ;-)

Cheers!
Rich