One source for neat mechanical gizmos (gears, couplimgs, belt and chain
drives) is Stock Drive Products, 2101 Jerico Turnpike, New Hyde Park, NY 11040
Phone (516)328-3300.  Ask for the latest edition of their "Handbook of Small
Standardized Components".  My copy is dated 1988 but I believe they're still
in business.

Another source is Small Parts Inc., 13980 NW 58TH Court, Miami Lakes FL 33014
Phone (800)220-4242.  They have more hardware and sheet and rod stock, and
also carry tubing and connectors for pneumatic and fluidic use.

Finally there's Herbach and Rademan, 18 Canal Street, Bristol, PA 19007, Phone
(215)788-5583.  Mostly surplus electro-mechanical, they seem to like motors
and drive parts, air driven stuff, and power supplies.  Newsprint catalog
makes good reading.

Ray
rduflon@cup.portal.com