[ATM] Will Alum Oxide fine grind quartz blank?
toolontop at yahoo.com
Fri Oct 9 05:40:37 JST 2009
Oops, brain lock-
My progression is 500 SiC, 25 micron Al2O3, 12 micron Al2O3. I don't find any advantage to going to finer grades, and they are the WCA 25T and 12T.
--- On Wed, 10/7/09, Mark Cowan <toolontop at yahoo.com> wrote:
> From: Mark Cowan <toolontop at yahoo.com>
> Subject: Re: [ATM] Will Alum Oxide fine grind quartz blank?
> To: atm at atmlist.net
> Date: Wednesday, October 7, 2009, 9:30 PM
> Al2O3 is only a little harder than
> SiO2 and it will grind it, but very slowly. For quartz
> I use SiC through 500 grit and then switch to the (similar
> size) 25 micron aluminum oxide and finish with 15 micron
> before polishing.
More information about the ATM