"Mike Firth" wrote in message ...
What do you want to do when you are done?
Are you examining the glass? Are you assembling these thin slices? Are
you covering something small?

Yes - I am examining the glass both physically (refractive index) and
chemically (elemental analysis). I want a thin cross section of the
3mm thickness of the piece.

How thin? 3mm? (Square) 0.3mm? (thickness of 3 sheets of light aluminum
foil)

As thin as possible I guess - is it possible to get it down to 0.3mm
without it breaking?