[ATM] Grit for 10" Quartz Blank - 3 questions

[Dave and Connie <dmatt@frontiernet.net>]

I made up my mind and ordered a 10" blank from recolabs.com.  Probably not 
the best choice for a beginner but the difference in price between that and 
an 8" wasn't much.

The plan is to get a f6 mirror out of it so the sagitta will be a little 
over .1".

Now I need to order the grit (from gotgrit.com).
Their 10" kit contains:
SiC #80 1 LB, #120 3/4 LB, #220 3/4 LB,
WAO 25 Micron 1/2 LB, 15 1/4 LB, 9 1/4 LB,
CEO 3/4
Gugolz Pitch 2 LB

 From what I have read it is a good idea to go finer with the SiC before 
switching to the aluminum oxide due to the hardness of the blank in 
relation to the aluminum oxide.

Question 1 - Should I add 1/2 lb each of 320 and 500 grit SiC to the order?

I am starting from a flat blank and planning to use a tile tool.

Question 2 - Would it make sense to add in 1 lb of 60 grit and generate the 
initial curve with a 3" or so pipe cap?

Question 3 - Any other changes in quantity or grit sizes?

Dave



_______________________________________________
ATM mailing list http://www.atmlist.net/