Re: Silicon Telescope Mirror

Bill Marriott (btk@ix.netcom.com)
Sun, 5 Mar 1995 22:15:04 -0800

You wrote:

>
>You don't have to use pitch for polishing. There is a compound called
>"tropical pitch" which is made of rosin, castor oil and woodflour
>(melted together). I don't think it will be susceptible to slurries as
>pitch is. Oherwise it's used in the same way as "normal" pitch lap -
you >can press it, cut it or form it with rubber mats.
>Drop us a line if you want more info.
>
>Bratislav
>
Well., this stuff sounds interesting. I have lots of rosin at work, and I have heard of adding wood to pitch. Any specifics would be appreciated. Hopefully within 2 weeks I'll have some results..

Bill Marriott Forest Knolls, Ca btk@ix.netcom.com