Fusor Forums

Can you elaborate a bit on the difficulties of beam on target work? At least two people have done it. Certainly it's more substantial than a fusor.

I hope you won't landfill that chamber - I am sure that it could find much use even if not as originally intended.

Recently I've been messing around with heat pipes -- specifically, trying and failing to replace the water coolant charge in the standard heat pipes with acetone, which would work at much lower temperatures. (This would work better if I used, oh, I don't know, vacuum , but I would need to get cryoge...

I've been interested in DIY ceramic to metal seals. It seems possible that with the right hacks we could make these in our own vacuum systems. Sadly, I usually haven't seen much that's really interesting/successful.

I really need to get a length of thin bellows hose with some Ultra Torr fittings.

I have a problem with swagelok fittings, especially 1/8 inch brass swageloks on copper tubing, getting seized together -- I can unscrew the nut, but the cones on the tube don't come out of the socket. How can I fix or prevent this? Is a thin sheen of vacuum grease on the larger cone ferrule an OK id...

Those spikes remind me of the tungsten field emitters formed for vacuum microelectronics (basically MEMS vacuum tubes) I use a standard KF40 manual angle valve plus a needle gas inlet valve to adjust pressure. The meaningful adjustment range for the gate valve is all pretty close to closed, but you ...

Ahhh, it's built up out of tubing pieces and machined plugs? That could simplify things...

I'm still a bit dejected over the failure of my own Penning ion source attempt -- Andrew Setzman I am not.

This is fascinating work. Makes me ashamed for mostly sitting on my behind as far as the science goes these last several months. I wish I was the equal of that machining for the ion gun -- do you have a cross section drawing of what you actually built? I have only ever seen one other beam on target ...

Looks pretty cool. Probably works a lot better than my homemade experimental setup.

Turbopumps are so fragile and expensive that I would not dare use an uncertain oil (except oil that's positively identified, but moderately expired).