Search found 468 matches

by ian_krase
Sun Dec 16, 2018 1:01 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Flexible Deuterium Gas Input Hose?
Replies: 2
Views: 47

Flexible Deuterium Gas Input Hose?

I'm curious if anybody has any advice on a flexible hose setup for introducing gas into their vacuum system. Normally one uses fixed metal tubing between the metering valve and the fusor -- which works well for most fusors but is inconvenient (even if bend-by-hand refrigeration tube is used) for vac...
by ian_krase
Sat Dec 15, 2018 10:24 am
Forum: New User Chat Area
Topic: What is swagelok?
Replies: 6
Views: 160

Re: What is swagelok?

Oddly, all of the Swagelock valves I bought on Ebay were pretty cheap. I have an SS-BMG which is pretty nice as a metering valve, it has a full bellows seal. Interesting fact: there are some swagelok "stores" / warehouses / showroom type places, and some of these places will gladly sell you Swagelok...
by ian_krase
Sat Dec 15, 2018 7:50 am
Forum: New User Chat Area
Topic: What is swagelok?
Replies: 6
Views: 160

Re: What is swagelok?

Swagelok stuff is expensive enough that a mere *discount* isn't enough to gain you that much.

If you can get Swagelok parts cheaply, though, you could make your entire gas inlet line using them.
by ian_krase
Sat Dec 15, 2018 7:43 am
Forum: New User Chat Area
Topic: What is swagelok?
Replies: 6
Views: 160

Re: What is swagelok?

Swagelok is a company that makes tube fittings, pipe fittings (these are NOT the same thing), and valves. Many of their products are useful for fusors! However, they're fairly expensive. Some of their products have imitations that are much cheaper and just as good -- "A-lok", "Yor-Lok", "Let-Lock", ...
by ian_krase
Fri Nov 30, 2018 9:01 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Electron Impact Ion Source pictures wanted
Replies: 3
Views: 574

Re: Electron Impact Ion Source pictures wanted

I have gotten so far as to pick up on the "box" structure of these ion sources. I'm curious whether you have a clear idea of how the gas is injected -- is there just a tube going into the side of the ion box? How large would you say the exit and entry holes typically are? Are they equal to each other?
by ian_krase
Mon Nov 26, 2018 6:48 am
Forum: Ion Gun Design and Construction (& FAQs)
Topic: Electron Impact Ion Source pictures wanted
Replies: 3
Views: 574

Electron Impact Ion Source pictures wanted

I'm interested in any pictures or diagrams that anybody has of professionally made or mass produced electron impact ion guns.

(these are more common in RGAs and mass spectrometers, which is what I am building, than in things like fusors.)
by ian_krase
Sun Nov 25, 2018 5:14 am
Forum: Advanced Technical Discussion Area
Topic: Harbor Freight freebie meters
Replies: 12
Views: 1024

Re: Harbor Freight freebie meters

I'm not sure if the meter ratings should be Considered ridiculous safety nerd stuff. I'm not willing to use HF meters, or most other cheapie meters, on moderate-voltage high-current stuff like wall current.
by ian_krase
Thu Nov 22, 2018 5:45 am
Forum: Advanced Technical Discussion Area
Topic: Harbor Freight freebie meters
Replies: 12
Views: 1024

Re: Harbor Freight freebie meters

Ahhh, yes.

Then of course there are the Keithley vacuum tube frontend electrometers, with input impedance measurable only in scientific notation.
by ian_krase
Tue Nov 13, 2018 6:39 am
Forum: New User Chat Area
Topic: Interested in talking to an expert chemist for non-fusion question
Replies: 0
Views: 160

Interested in talking to an expert chemist for non-fusion question

I'm interested in talking with an expert chemist for a question/project unrelated to fusion. It concerns combustion and organic chemistry.
by ian_krase
Tue Nov 13, 2018 6:22 am
Forum: New User Chat Area
Topic: Crystal synthesis inside a vacuum?
Replies: 3
Views: 326

Re: Crystal synthesis inside a vacuum?

I believe that sputtering sometimes forms crystals as well, at least when the substrate is a crystal.