Re: [ATM] The 15.5 inch Ultrathin, more pictures

[Joe <nss@mwt.net>]

With all this conversation recently of Thin Projects.

Let me add this old one of mine that is still waiting for a design to be 
tried to be made into.

It's fully polished, and as close to a pretty good sphere as i can 
tell,  check this one out.

http://www.qsl.net/wb9sbd/tube.html

Joe

vorblesnak@peak.org wrote:

>I have a couple of more pictures uploaded.  Here is the mirror on the
>tool, on my favorite grinding table.
>
>http://www.atmlist.net/contrib/vorblesnak-at-peak-dot-org/15%20inch%20ultra%20thin/Mirror%20and%20Tool.jpg
>
>Here is a composit image with three check points on it.  The left most is
>about 1 hour, just after I cut the outer ring off.  The middle is a little
>over two hours.  The right hand one is about four hours.
>
>http://www.atmlist.net/contrib/vorblesnak-at-peak-dot-org/15%20inch%20ultra%20thin/Three%20pics%20Small.jpg
>
>I do these check point shots to prove to myself I am making progress. 
>That spot on the right hand edge is very slow to respond, but I am making
>headway.
>
>15.5 inch diameter
>3/16ths inch thick
>f5 more or less
>
>David Davis
>Toledo, Oregon 97391
>
>
>
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