Re: Teflon as RSG-disk material

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>

Hi Christoph,

Unless it was very thick (~1/2 inch) I would think that it would be too 
soft.  Might "wonder" when rotated.  Also, Teflon cold flows pretty bad so 
it may warp.

I am personally not "sure" though.  I have a 8" x 1/4 scrap disk here I am 
looking at...  Just seems too soft to me...  3/8 is far 
stiffer...  Probably need 1/2 inch thick...

A 12 x 12 x 0.5 inch chunk of teflon runs $103 here.  Same size in G-10 is 
$50  but you would probably only need like a 6 x 6 x 3/8 sheet for a gap 
and that is $18...  Might be worth finding G-10 unless you can get the 
teflon at a reasonable price.

http://www.mcmaster-dot-com/
part number  8667K117


Cheers,

         Terry

At 02:06 PM 7/6/2003 +0200, you wrote:
>Has anyone tried this before???
>
>I wondered if teflon would be a good material for making my new RSG disk...
>I searched the web for this but only found G10 and tufnol disks, both
>materials I can't get hold of.
>Teflon has very good heat resistance properties but does it have enough
>strength to carry four 1/4" electrodes on a 12" dia, 1/2" thick teflon disk
>at 3000rpm .....
>
>any suggestions welcome.
>
>sincerely
>
>Christoph Bohr