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As a retired electronic engineer, I have had at least a casual interest in both high-vacuum and mechanically-pumped vacuum techniques. Recently I ran into a vacuum problem with my TIF 9100V vacuum

Not really, no. The chip shortage has really tanked my revenue. Besides, this is a bit of an antique instrument, and I'd really like to get it working in its original configuration. And further, I've

you cant spring for a little turbo ???

On 4/21/22 14:05, Dave McGuire wrote: > ? Hi folks, I'm getting back to this now after a little road trip. > ? I've disassembled the electron gun, and it was as you suggested, that the whitish goop

On 4/3/22 20:01, lrwweb wrote: > That whitish goop looks more like just a sort of strain relief or insulation for the cables than an actual seal. Even if it did seal to the outside of the cables, air

Yes, the lasers mailing list is open to all, but as I mentioned earlier there has been very little traffic there lately. Feel free to change that. :-) But please turn off your CAPS LOCK key. ;) Note

THE STAT ARE VEERY LOOOOW CAN I BE A MENBER OF LASER GROUPE AND LOOK AT ARCHIVE JACK 47 71 didn't work. Hey Lindsay, it's great to see your name in my inbox! Yes, the lasers list archives are still

Hey Lindsay, it's great to see your name in my inbox! Yes, the lasers list archives are still up, and the list itself is too, but it sees essentially no traffic lately. I separated the list handling

It's great to hear from you Drew, I hope you've been well! I don't think it was the pump oil, because the valve configuration had the diffusion pump cut off during these tests, and the roughing pump

Howdy, Good to hear you're still at it! I get nostalgic looking back at the vacuum and lasers lists, I guess they're just not things that folks play with as much these days. BTW is the archive of the

I got nothing on the wax Dave, but it is good to hear chatter on the list. My guess is that the water was in the oil of the vacuum pump. Vacuum oil is cheap so change it out often. I am cheap too so I

Hey folks, this list sure has been quiet lately. I'm restoring an Amray 1200 bench-top SEM, and my attention has turned to the vacuum system. The instrument has been down to air and stored in a garage

SILVER OVERCOAT…MAYBE ON MUSICAL INSTRUMENTS… BRASSES, WOODWINDS MAYBE… BUT WITH WATER BASE, PROBABLY NOT STRINGS… MAYBE THE SPIKE… HEH HEH ALOOOOHA JERRY PALMER, MAUI Sent: Wednesday, June

Yes, quite often :-) Steve

Still here...

Same here. It's pretty normal for smaller mailing lists to "ebb and flow". -Dave -- Dave McGuire, AK4HZ New Kensington, PA

This is the first message I have received in many months.

I have no idea if the Angel Guard overcoat can be applied on a fresh Al coating. Sounds like an experiment that needs trying out! The application of their overcoat is much like applying a coat of

Guy, That process looks amazing. As I already have a monster aluminizing vacuum chamber I can do aluminum and not have to redo the mirror every 6 months here in FLA. But I am very interested in that

Now there was an article worth sharing. So down-home; no fuss, no muss.... On Wednesday, June 16, 2021, 10:31:03 AM CDT, Guy Brandenburg via groups.io <gfbrandenburg@...> wrote: I