Re: 60oz. stepper motors!

I have a Harbor Frieght mini-mill. So your saying i could cut
stainless if i take my time? How much do you feel I would be able
to cut if I use a 1/4 inch endmill and how deep?

This would be based off the www.hobbycnc.com package.

Thanks

--- In CAD_CAM_EDM_DRO@y..., Jon Elson <elson@p...> wrote:
> jepps5 wrote:
>
> > Would 60oz. stepper motors be enough to mill stainless steel? I
know
> > that everybody has big motors here but I dont have that much
money
> > to spend. I was wondering if I could just use slow feed rates to
cut
> > stainless steel with these stepper motors.
>
> What size machine do you have? With a 5 TPI Acme screw, I would
have
> doubts that this motor could move A Series-I Bridgeport without
any cutting
> faster than 10 IPM or so. If you have a Sherline, I doubt you can
mill stainless
> anyway. The problem is that stepper motors lose their torque
rapidly as speed
> increases. If you have 60 In-Oz of holding torque, you might have
only 20 In-Oz
> of driving torque at 300 RPM.
>
> Jon