carbide bearing surfaces

> I made Two holding blocks out of square 1045 that fitted into the
> old guide beams. Fed the refrigeration through the centre; Mmade up
> two sets of clamping blocks out of A2 where I soldered with silver
> solder old carbide inserts on the ends. (21 *TMP?) Surface ground
> the stuff and engraved some channels for the refrigeration. The
> pressure is kept by springs under the outer hollow holding screw.
> (by the way I put inside the holding screws the spring and a
> centring shaft. Once adjusted the right pressure I cut this shaft
> flush with the holding screws. Fool prove for the operator) For
> vertical guidance I put the shafts of four broken carbide end mills
> above the lateral guide blocks so that they spin

Hmm - about a week ago we were talking about carbide-padded
collet-like devices used as guide bushings on swiss type lathes.

I wonder what would happen if one used some reversible (ie,
perpendicular sided) inserts as contact pads on a miniature traveling
steady rest with the work bearing midway between the (broken) points.

Chris

--
Christopher C. Stratton, stratton@...
Instrument Maker, Horn Player & Engineer
22 Adrian Street, Somerville, MA 02143
http://www.mdc.net/~stratton
NEW PHONE NUMBER: (617) 628-1062 home, 253-2606 MIT