Re: [ATM] Glass cutting speed

[Richard <cnc@cncservo.co.uk>]

Hi Dave,

Friday, March 24, 2006, 3:58:08 PM, you wrote:

DS> If at all possible, you want to put (cut? file?)
DS> notches in your metal band to allow the grit and water
DS> to drop down into the groove in the glass and stay in
DS> constant contact between glass and cutting tool

I'd say Castelate, but maybe that's an English word ;)

I just cut through 1-1/4" thick Zerodur at 2-1/2" diameter at
250RPM and it took about 7 or 8 minutes. I wasn't as careful as
I should have been breaking out the other side, but it was just
a trial... I would doubly echo your warning on breaking through
carefully, and even cut from both sides if possible, although
you may get a slight step at the join. Plenty of water - both
for lubrication and to keep the dust down.

Double sided tape works well, both for holding a water container
to a pillar drill table and for holding the blank to the bottom
of the container. Suitable containers may be found in the
kitchen, but use stealth or ask permission from SWMBO first...

-- 

Best regards,
  Richard in the UK

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