[ATM] ATM Grit Sequence for 8" Mirror

[asatsi at yahoo.com (Satish K. Pagare)]

Dear List,

I am almost done with a glass tile/plaster tool. I 
need to start the grinding now. Though I have read on 
many atm pages about the grits and all. Generally for 
an 8" what exactly sequence of grits should I use ? 
And do I also have to buy Cerium Oxide along with 
Silicon Carbide ?

Its too early to ask, but how to measure the
sagitta while rough grinding ? Using a metal ruler
and some already marked up cardboard strip or how?
I dont have access to dial indicator or such stuff.
Any easy way around ?

Thanks and Warm Regards,
Satish/

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