Re: ATM Starting grinding - Advice?

[Anthony Stillman <atmer@flash.net>]

>...8" pyrex blank
>...7" diameter plate glass tool
>...start MOT rough grinding tonight



Dave,

Sounds good to me.  f/8 won't take too long with a chordal stroke.  Less
than three hours if you put your back into it, so keep checking the depth
after the first hour.  Be aware that given the slightly sub-diameter tool
working MOT even center over center or 1/3 W will tend to push the radius
shorter.  On average you can expect more TOT in the later stages to keep
your f/ratio at eight.

Welcome to the fold :-)

Anthony