Re: [CAD_CAM_EDM_DRO] Re: servo vs stepper

gyachts wrote:

> > Small stepper systems are about as cheap as you can go. Large
> stepper
> > systems, especially for Bridgeport-sized machines and above get VERY
> > expensive. 1/2" computer tape drive motors and such similar
> surplus servo
> > motors can be had for a song, while giant steppers can go for many
> hundreds
> > of $ on the surplus market.
> >
> > Jon
>
> I would certainly like to learn that "song", I can't find a deal for
> servos to use on my mill/drill anywhere. Everything I've found the
> right size is priced like new.
>
> Can you make any suggestions??

You have to know where to look. A lot of this stuff goes to the crusher
without the useful parts being extracted. I know a scrap yard here in
St. Louis that has a steady supply of computer gear and tape drives.
Sometimes they pick the motors, sometimes they don't. Bring a screwdriver
and harvest the goodies yourself. You don't know the new prices, or
you'd even agree that the prices at C&H Sales were good. They only
want $180 for a $550 motor! Surplus Center in Lincoln, NE and Herbach &
Rademan in NJ (www.herbach.com) are better places to look. Alltronics
in San Jose is a GREAT place to look for motors, but you have to go
there in person. There must be 5000 electonic surplus places in the
US, and they have a secret dealer network that trades overstocks
on good parts around.

Jon