Search found 26 matches

by MatthewL
Fri Dec 22, 2017 6:46 pm
Forum: Images du Jour
Topic: Possibly Fusion
Replies: 8
Views: 2915

Possibly Fusion

I have now gotten to a point in my fusor project that I should be able to achieve fusion. I had one problem with my D2 source (electrolysis) in that it seemed to not work very well in terms of gas produced and purity. I then took it apart and built a new one which seems to work better. IMG_1066.JPG ...
by MatthewL
Sun Dec 03, 2017 12:00 am
Forum: Vacuum Technology (& FAQs)
Topic: Edwards Diffstak disassembly and cleaning?
Replies: 6
Views: 2391

Re: Edwards Diffstak disassembly and cleaning?

The seals for the drain and filler plugs are small, round Viton o-rings. New ones can be ordered from Edward's, but shipping to America can be sort of long and trying to make an account with Edward's can be difficult as well. I would recommend just ordering some Viton o-rings from a place like McMas...
by MatthewL
Thu Nov 30, 2017 6:34 pm
Forum: Vacuum Technology (& FAQs)
Topic: Edwards Diffstak disassembly and cleaning?
Replies: 6
Views: 2391

Re: Edwards Diffstak disassembly and cleaning?

Rob, I have taken apart one these as well. The aluminum part is the top of the Christmas tree, and turning the whole pump upside down after removing the retaining bar should allow the whole assembly to fall out. You are most likely right in your assumption about the assembly being stuck by tar or ca...
by MatthewL
Sat Sep 02, 2017 10:47 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Liquid HV Feedthrough
Replies: 15
Views: 4994

Re: Liquid HV Feedthrough

To make a high voltage feedthrough I think that the best option would be to use a compression port and a glass or ceramic tube similar to the one that Doug Coulter makes here: http://www.coultersmithing.com/AuxCP/FT.html . As Ian suggested you would need a very tall column to keep the oil out of the...
by MatthewL
Fri Sep 01, 2017 10:09 pm
Forum: Images du Jour
Topic: Progress on my fusor
Replies: 28
Views: 7659

Re: Progress on my fusor

I have a lot of extra time because there will be no school until Tuesday (due to Hurricane Harvey). I spent some of that time working on my first lathe project that was not just practice. I turned two of the hollow nuts for my diffstack oil drain and dipstick and they helped very slightly for any ve...
by MatthewL
Wed Aug 23, 2017 1:41 am
Forum: Images du Jour
Topic: Progress on my fusor
Replies: 28
Views: 7659

Re: Progress on my fusor

The vanes did appear to be adding some to the resistance. It turns out that one of the vanes was in backwards. There is a groove on the first stage vanes that is supposed to face in the direction of rotation and one of the vanes was not. After fixing that problem, adding even more oil as lubrication...
by MatthewL
Sat Aug 19, 2017 3:47 pm
Forum: Images du Jour
Topic: Progress on my fusor
Replies: 28
Views: 7659

Re: Progress on my fusor

After I cleaned the pump I began to reassemble it. After it was fully reassembled I went to turn the motor on, but it wouldn't spin. The motor is definitely working but it is the shaft for the actual pump which won't turn. IMG_0235.JPG IMG_0236.JPG I included an exploded view of the pump so it is ea...
by MatthewL
Thu Aug 03, 2017 12:04 am
Forum: Images du Jour
Topic: Progress on my fusor
Replies: 28
Views: 7659

Re: Progress on my fusor

Before I had gotten either of these responses I had decided to change the oil. I have already done one oil change before when I disassembled the pump to clean it. When I did the first oil change, the oil was black (It was light yellow when I had originally put it in). The black color of the oil and ...
by MatthewL
Mon Jul 31, 2017 3:59 am
Forum: Images du Jour
Topic: Fusion Reactor Progress
Replies: 3
Views: 1620

Re: Fusion Reactor Progress

The issue of your plasma not becoming centrally confined within the grid can be fixed by using a ceramic (usually alumina) tube to cover the stainless steel pipe. Check McMaster Carr Of course power and pressure are important in determining whether or not you will have a good plasma. Most likely the...
by MatthewL
Sun Jul 30, 2017 4:45 pm
Forum: Images du Jour
Topic: Progress on my fusor
Replies: 28
Views: 7659

Re: Progress on my fusor

I have been working on getting my vacuum system down to a better vacuum, but with little success. I have completed everything that I should need for my vacuum system. I have placed a Swagelok ball valve in between the needle valve and the chamber, and I have put the end caps that I just had machined...