Re: Mirror grinding question

Dianne Van Gemert (dvangeme@edcen.ehhs.cmich.edu)
Wed, 8 Mar 95 18:07 EST

Messages sorted by: [ date ][ thread ][ subject ][ author ]
Next message: Richard Combs: "Test for TDE in grinding"
Previous message: Gary Lowell: "Re: Pit Sizes"
Maybe in reply to: Gary Lowell: "Mirror grinding question"

>I wasn't carefull enough in my description of the bubble. It is not
>in the glass, but rather in the slurry between the mirror and the tool.
>So my question is should I ensure that I have a spherical mirror as best
>as I can tell before moving on to the next finer grit, and if so what is
>the best stroke to use ?

You are exactly right. The mirror is not yet sphereical (or spherical, for you proficient typists). Stay with your current grit with the 1/4 dia. strokes until this goes away. Alternating top and bottom will also keep your focal length intact. Patience is the key. The finished job will be well worth it.

Next message: Richard Combs: "Test for TDE in grinding"
Previous message: Gary Lowell: "Re: Pit Sizes"
Maybe in reply to: Gary Lowell: "Mirror grinding question"