Search found 32 matches

by fpg
Mon May 24, 2010 9:27 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Chamber construction
Replies: 6
Views: 2676

Re: Chamber construction

<t>It will save me some cost if I can remove the roughing line and have the diff pump in series with the roughing pump instead.<br/> <br/> I prefer the spherical chamber the most but it is the price that matters the most. I have max 600 dollar to spend on the chamber construction. I have seen severa...
by fpg
Sun May 23, 2010 10:19 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Chamber construction
Replies: 6
Views: 2676

Chamber construction

<t>I found a company that has agreed on constructing a vacuum chamber for my project. They said that I should send them some schematics on the chamber. The problem is that I do not have any experience at all on how to make schematics. I would be pleased if I could get some general advices on how to ...
by fpg
Wed Apr 21, 2010 7:58 pm
Forum: Vacuum Technology (& FAQs)
Topic: ikea saladbowl outgassing?
Replies: 8
Views: 2810

Re: ikea saladbowl outgassing?

<t>Thanks for all your responses.<br/> <br/> I believe that I have the small bowl with its diameter of 4.72" from ikea. From your responses it seems like outgassing wouldn´t be much of a problem.<br/> <br/> I will try to make this chamber as cheap as possible. My plans for the chamber constuction is...
by fpg
Tue Apr 20, 2010 8:25 pm
Forum: Vacuum Technology (& FAQs)
Topic: ikea saladbowl outgassing?
Replies: 8
Views: 2810

ikea saladbowl outgassing?

<t>Slow and steady I will replace my leaky and problematic glass bowl chamber to a new and better chamber.<br/> <br/> I´m thinking of using 2 stainless steel salad bowls to build my "classical" hemisphere shaped chamber (as I´ve read in the forum that others have used the same)<br/> <br/> But wouldn...
by fpg
Mon Apr 19, 2010 7:53 pm
Forum: Vacuum Technology (& FAQs)
Topic: Veeco diffusion pumps
Replies: 6
Views: 4107

Re: Veeco diffusion pumps

I won the auction!

Now I only hope that the vulcano dust disappears from europe so the pumps can arrive by plane.
by fpg
Sat Apr 17, 2010 5:11 pm
Forum: Vacuum Technology (& FAQs)
Topic: Veeco diffusion pumps
Replies: 6
Views: 4107

Veeco diffusion pumps

<r>reasently found these diffusion pumps on ebay:<br/> <br/> <URL url="http://cgi.ebay.com/P65618-Lot-2-Veeco-Vacuum-Diffusion-Pumps-Model-2A-1_W0QQitemZ390182060070QQcmdZViewItemQQptZBI_Pumps?hash=item5ad8a9c026"><LINK_TEXT text="http://cgi.ebay.com/P65618-Lot-2-Veeco- ... 5ad8a9c026">http://cgi.eb...
by fpg
Wed Apr 14, 2010 5:58 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Question "Star Mode"
Replies: 3
Views: 2295

Re: Question "Star Mode"

<t>Hello Fernando,<br/> <br/> Glad to hear that someone else uses a TV flyback as a powersupply! <br/> <br/> in your videos it seems like you have <100mTorr to about 15mtorr. I can´t really tell if its worth trying fusion in this state as I´ve never done it myself. But if you have deuteriumgas to sp...
by fpg
Sat Jan 09, 2010 11:47 am
Forum: Vacuum Technology (& FAQs)
Topic: Baseplate layers
Replies: 9
Views: 3486

Re: Baseplate layers

<r>I´ve looked at ebay several times but there is very few pumps which actually ship outside the US. Those who ship worldwide also have a huge shipping cost. it somehow feels safer buying one here even if the price is a bit higher due to warranty and other factors.<br/> <br/> The 2-stage vacuum pump...
by fpg
Sat Jan 09, 2010 12:52 am
Forum: Vacuum Technology (& FAQs)
Topic: Baseplate layers
Replies: 9
Views: 3486

Re: Baseplate layers

<t>Finally!<br/> After a long search I found a steel workshop that made me a steelplate with 6 holes, four holes for the legs, one hole for the vacuum pump and one hole for the inner grid. The size was 250*250*10mm so it should meet the requirements for the vacuum. The cost of the plate was 28$<br/>...
by fpg
Wed Jan 06, 2010 7:19 pm
Forum: Vacuum Technology (& FAQs)
Topic: Baseplate layers
Replies: 9
Views: 3486

Re: Baseplate layers

<t>I will use a rubber O ring that came with the glass bowl and some silicon for some extra seal. I hope it will be enought to seal the bowl to the baseplate.<br/> <br/> I´ve calculated that the pressure on the baseplate will be about 785.4N assuming the pressure difference is 100k Pa and the diamet...