Hi > On Nov 2, 2014, at 9:49 PM, Chuck Harris <[email protected]> wrote: > > In retrospect, it looks like their teflon coating is even simpler > done. It looks like what they did is take very finely sectioned > teflon powder, and make a slurry in probably acetone. > > They cleaned the vessel very well first with acetone and second, > probably a little distilled water to etch the glass slightly, > and then put the teflon/acetone slurry in the bulb, slooshed it > around a bit to cover the walls, and then drained it all out. > When the acetone evaporated, the teflon powder would remain on > the walls.
If it’s that simple, then going crazy over the coating as I was suggesting isn’t really needed. Bob > > I've seen a nearly identical coating every time I take a can of > teflon spray lubricant/mold release, and spray it on something. > > -Chuck Harris > >> >> I would think that making the teflon coating would be pretty easy. >> >> What I would try is to put a nichrome boat, and some teflon into the >> vessel, and pull it down to a good vacuum. Then heat up the boat, >> and the teflon should sublime, and condense on the walls of the >> vessel. >> >> The nichrome boat could be something as simple as wrapping the nichrome >> into a solenoid form around some teflon rod. >> >> -Chuck Harris > > > > Bob Camp wrote: >> Hi >> >> It’s been way too many years since my last Maser play session … >> >> Will it fire up *without* the Teflon coating on the bulb? Yes it works >> *better* >> with the Teflon (less wall interaction). Getting the bulb re-coated might be >> a >> major pain. It does look ugly in it’s current state. I’m wondering about just >> stripping the bulb and then seeing what works and what does not. >> >> Bob > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
