Re: [CAD_CAM_EDM_DRO] Digest Number 1685

Gentlemen,
At the recent P.R.I.M.E. show the Sherline booth had on display a conversion
to the pulleys that gave the machine up to 10,000 rpm capability. As one of
my interests for this machine is engraving I thought it a worthy
conversion... so I made my own. And it works! My question is; do any of you
worthies know of a source for a tachometer kit, schematic, or plans for an
optical pickup tachometer reading to the 10K to 20K rpm level in probably 3
digits ( x100 )? My next question is; do any of you know a source for
reasonably priced stepper motors to replace my Maxnc 145 oz. single end with
double end motors. Maxnc price is $100.00 each so lower price is desired.
PJH