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. 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
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