Search found 29 matches

by Rob Pope
Sun Mar 25, 2012 2:56 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: CF vs KF flanges
Replies: 10
Views: 3431

Re: CF vs KF flanges

<t>So this is somewhat related-<br/> <br/> Is it at all possible to achieve fusion in a KF 50 sized cross?<br/> <br/> how small can one go?<br/> is 2" ID too small?<br/> Because past that they shoot quite out of what I want to pay (I seriously only make $20/week, right now my budget is $1000 in a bo...
by Rob Pope
Sun Mar 25, 2012 2:51 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Proposal to remain flexible and keep costs low
Replies: 5
Views: 1856

Re: Proposal to remain flexible and keep costs low

<t>Alright, Thankyou all for your input, probably should have checked for flangeless crosses online first, apparently they don't exist<br/> <br/> Regarding the hemisphere route, did you do the welding yourself, or have it done?<br/> My main thing with hemispheres is, how to machine the end of the fl...
by Rob Pope
Thu Mar 22, 2012 6:57 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Proposal to remain flexible and keep costs low
Replies: 5
Views: 1856

Proposal to remain flexible and keep costs low

<t>OK, I had a thought-<br/> The standard procedure for creating a fusion chamber is to either buy hemisperes and do a lot of expensive machining and welding, or to buy a cross with flanges at the ends.<br/> <br/> I lack the tooling, skill, and desire to go the hemisphere route, which leaves me with...
by Rob Pope
Thu Mar 22, 2012 6:11 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: CF vs KF flanges
Replies: 10
Views: 3431

Re: CF vs KF flanges

I have some experience with high voltage (planning on re-using my Tesla Coil NST for the fusor)
I wouldn't feel comfortable with less than 3" for arcing to the case.
by Rob Pope
Wed Mar 21, 2012 6:52 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: CF vs KF flanges
Replies: 10
Views: 3431

Re: CF vs KF flanges

<t>Thanks for the input all!<br/> It really cheered me up, since KF is all so cheap!! <br/> (well, not all, but your basic flanges are about a magnitude cheaper than CF)<br/> <br/> I have a drill press/lathe/milling machine that is designed for metal, and a friend who is good at welding with tons of...
by Rob Pope
Tue Mar 20, 2012 7:06 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: CF vs KF flanges
Replies: 10
Views: 3431

CF vs KF flanges

<t>So I've been looking at actually constructing my fusor, and one thing getting me down is the $$$$ needed for ConFlat flanges<br/> <br/> KF flanges look much cheaper, so, is there a reason to use CF over KF?<br/> <br/> if KF works, it looks simpler and cheaper, and as a highschooler, $ doesn't ent...
by Rob Pope
Fri Mar 16, 2012 1:24 pm
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum Pumps, can it be good AND cheap?
Replies: 14
Views: 4239

Re: Vacuum Pumps, can it be good AND cheap?

<r>OK, I've come to understand how a good vacuum system is created, and that I need an oil diff pump (turbopump seems excessive)<br/> I found this <URL url="http://www.ebay.com/itm/Edwards-High-Vacuum-Diffusion-Pump-6M3A-/251000953681?pt=LH_DefaultDomain_0&hash=item3a70d29b51"><LINK_TEXT text="h...
by Rob Pope
Wed Mar 14, 2012 6:26 pm
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum Pumps, can it be good AND cheap?
Replies: 14
Views: 4239

Re: Vacuum Pumps, can it be good AND cheap?

Thanks for the advice both of you
I'll start looking for other types of pumps, and keep my eye out for good dual stages
by Rob Pope
Fri Mar 09, 2012 8:08 pm
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum Pumps, can it be good AND cheap?
Replies: 14
Views: 4239

Re: Vacuum Pumps, can it be good AND cheap?

I read that the lowest pressure attamiable with a 1399 is 1.5X10^-2 torr, this translates to 15 millitorr, or ~15 microns, correct?

I just want to make sure this pump will be capable of fusion pressures
by Rob Pope
Fri Mar 09, 2012 1:44 pm
Forum: Vacuum Technology (& FAQs)
Topic: Vacuum Pumps, can it be good AND cheap?
Replies: 14
Views: 4239

Re: Vacuum Pumps, can it be good AND cheap?

Hmm, I origionally thought that this unit was dual stage, though uopn further research I realize that the 1399 is a single stage unit. Will it still be suitable for fusion?