In a message dated 7/14/2005 2:23:03 P.M. Central Daylight Time,
philpem@... writes:
What PCB drills are you guys using? Anyone got any recommendations?
Totally home-brew with "instrument grade" 400 Hz. 3-Ø quill-motor rebuilt
with 1/8" collet-chuck. Turns 12,000 RPM, fixed. Would prefer twice that, but
motor was "surplus" cheap, but very fine. New, probably $200?
This is mounted in a fixture with Thomson linear ball-bearings. Only 1/4"
"Z movement", but drills a hole per second with ease. LOTSA "DIY
work"!!!!!!!!!!!!
Photo under my name, "Jan Rowland" in PHOTOS. Try this: _Home-Bre... _
(
http://photos.groups.yahoo.com/group/homebrew_pcbs/vwp?.dir=/JanRowland&.src=gr&.dnm=Home-Brew+CNC+PCB+Drill.jpg&.view=t&.done=
http://photos.groups.yahoo.com/group/homebrew_pcbs/lst?&.dir=/JanRowland&.src=gr&.view=t)
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