Hi You can get epoxies with very low outgassing numbers. Also you will be using very little of it.
Bob On Sep 1, 2010, at 3:28 PM, Oz-in-DFW <li...@ozindfw.net> wrote: > > > On 9/1/2010 12:18 PM, Bob Camp wrote: >> Hi >> >> My guess is that you put the adjuster entirely inside the vacuum enclosure. >> Pump the gizmo down, stabilize it, measure where it's at. Do some math, pop >> it open move the adjuster x.xx turns. Step and repeat. Possibly have a fine >> and a coarse mechanical adjust screw. > How about getting really evil. Why not just deform the cavity for > coarse adjustment and rely on elastic deformation for fine? >> It's a one time only sort of thing. You can afford to do it the hard way. > or the dirty evil way ;-) >> Another option would be to allow the screws to come through the envelope and >> leak a little bit during the adjust process. Once you were done with >> adjustment, seal them up with a low out gassing epoxy. > Given the quality of vacuum the manual seems to imply, I'm guessing this > wont cut it. I'll bet that even low impurity Teflon has a long bakeout > period. >> My guess is that >> would be a problem thermally. If you need 0.001C gradients, you can't have >> more than one thermal path to the cavity. >> >> That's all getting complicated, and we're only talking about the easy to >> understand and address stuff... >> >> My understanding is that the guys at Kvarz spent years poking at their >> design in the secret back room before it worked as well as it does today. > I've been told that this is business is still highly empirical, so that > tracks. >> Bob > Oz (in DFW - Rich Osman) > > -- > mailto:o...@ozindfw.net > Oz > POB 93167 > Southlake, TX 76092 (Near DFW Airport) > > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.