Homebrew PCBs

Denny:  I ordered one "to play with", too; thinking, for THAT price, no 
biggie either way.  Was curious about the "Sioux" model that costs nearly 
twice as much in same catalog, thought.  Wonder if that is "noticeably 
better"?????

Clippard makes some super-fine electropneumatic valves, and those coupled 
with their piston-actuated two-way valves might make it possible to turn 
on/off the air except when this thing is "going down" for a hole.  Wonder if 
that would be worth the hassle, to "save air"???  A running compressor is an 
ANNOYING thing, even if 100' away in another building!

When the thing gets here, I will try to make an independent evaluation and 
post it here, as you just did.  And maybe some ideas how to rig this thing 
for "Z-travel".  Even if only 40,000 RPM ("loaded"), this would function 
faster than my present 400 Hz/12,000 RPM drill.  Hmmm...  Comments, anyone??? 
               Jan Rowland