Fusor Demo

[Vmike]

The glass I used for the Geek Fusor was salvaged from another instrument and had viton seals for flat surface sealing, so I made up the flat plates.

I'll take a bunch of pictures of fusor chamber related things and post them.

I thought I already was a G3, never paid any attention, I guess.

Famous or Infamous?

mike

[Alphageek]

You were a G3. But you, and everyone else who appears on this list was demoted to a G1 and had to start from scratch. Several of the people on that list were terminated outright.

Thanks for coming out on the right side of that one. We rather like having you around.

[Chriskarr]

Thanks for coming out on the right side of that one. We rather like having you around.

Well, I would say, personally, that's an understatement.

Also, what's up with the 'white spot' in the middle of the picture at 16:30 in the fusor demo?

[SitkaGrown]

The grids are made from stainless welding wire.

Mike , I have a couple of questions: Will copper wire work OK ? And what Neg pressures are we talking ?
Thanks,
Frank

[Vmike]

Copper will work for a short time, it's pretty hot in there. It will last a little longer than a fuse on a dead short. You can even melt the stainless wire if you run it too long.

as far as pressure, a demo fusor will generally fire at low voltage below 250 millitor. It'll be fuzzy and crispen up as the pressure drops.

[Vmike]

I posted a bunch of demo fusor pictures in the members projects forum.

mike

[Alphageek]

Mike you rule Thank you!

[SitkaGrown]

Mike you rule Thank you!

I concur !

https://www.surpluscenter.com/item.asp? ... atname=air ,BTW ,would this work ?
Also, I really don't think I'll be using copper wire !

[Tmb]

Those Varian TC gauges are expensive. The sensor is ~$50, but the controllers are usually $400.

Here's what I have waiting to be installed on the new front plate...

[SitkaGrown]

http://www.lesker.com/newweb/chambers/S ... lJar_1.cfm
Check these out.
Edit: Prices TOO high !!!

[SparkyProjects]

http://www.lesker.com/newweb/chambers/Std_GlassBellJar_1.cfm
Check these out.

I just had a thought since you posted those.
I don't know if anyone has seen the old fashioned lights for outdoor use, they are the same shape and have a rim, Something like this http://www.qvsdirect.com/images/P/t_18366_med.jpg, the old type had a brim like a hat.
The one in the image is a slender style, but there were some that had a larger diameter.
Keep your eyes open for old warehouses with these lights.

[SitkaGrown]

Sparky, I have a couple of those,small ones. We had them at the L/P plant that I worked at,they were supposed to be explosion proof.

[Chriskarr]

Explosion-proof doesn't mean implosion-proof..

Also, if you can, you want to get the vacuum about as hard as you possibly can, then allow some non-nitrogen gas in there...

...the nitrogen gas will form compounds (just like in a spark gap) and coat the wall of the fusor, making the glass more-and-more ugly with each run (even if there's no visible difference from one run, to the next).

[SitkaGrown]

Explosion-proof doesn't mean implosion-proof..

What I meant was, they kept L/P gas away from an ignition source.

[Slurpy]

You were a G3. But you, and everyone else who appears on this list was demoted to a G1 and had to start from scratch. Several of the people on that list were terminated outright.

See? I wasn't the only one who didn't know what the hell was going on!