Search found 1298 matches

by John Futter
Sat Oct 20, 2018 9:11 pm
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: LENR / Solid State Fusor
Replies: 1
Views: 37

Re: LENR / Solid State Fusor

consuli or whatever yourname is
your first post should have been in the introduce yourself forum
and pleasew review the rules
real names only No handles both for your forum presence and your real name ---both should read the same
by John Futter
Sat Oct 20, 2018 6:28 pm
Forum: FAQs: Vacuum Technology
Topic: #4 FAQ: vacuum gauges - pressure measurements
Replies: 5
Views: 12436

Re: #4 FAQ: vacuum gauges - pressure measurements

Richard I do take humbrage at your statement of "Stupid units that have no relation to useful conceptual stuff are the pascal, bars and millibars, inches of mercury, etc". Both Pascal and millibar are the prefered in the SI system which are used by 80% of the worlds vacuum physicists one bar = 101,3...
by John Futter
Thu Oct 11, 2018 6:10 am
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: Titanium walls
Replies: 4
Views: 510

Re: Titanium walls

I do sputtering all the time both Ti and Al are very difficult due to oxidation you need vacuums in the 10^minus 8 or better to stop these oxidizing. all can be done with a cryo pump but I have not seen this sort of system in use on this forum. You can evaporate both of these and get reasonable resu...
by John Futter
Wed Oct 10, 2018 6:36 pm
Forum: New User Chat Area
Topic: Plasma between two alternating electrodes?
Replies: 2
Views: 142

Re: Plasma between two alternating electrodes?

As used in reactive ion etch (RIE)

Look it up Sven
then we would not get superfluous quaestions
by John Futter
Mon Sep 17, 2018 9:31 am
Forum: Files
Topic: Paper on neutron counting using ZnS(Ag) phosphors
Replies: 8
Views: 1178

Re: Paper on neutron counting using ZnS(Ag) phosphors

roberto /Jon I made a neutron scintillator setup a few yago and posted it here to how i did it. It used Zns Ag etc and worked well all but for the few seconds delay. So its not prompt but i tested it in our magnet room @ work while a 900kV deuteron beam was in use. Quite a few neuts run around the m...
by John Futter
Thu Sep 13, 2018 3:30 am
Forum: New User Chat Area
Topic: Questions on refilling Hydrogen tank
Replies: 4
Views: 583

Re: Questions on refilling Hydrogen tank

I would leave a bit of hydrogen in the tank --just positive pressure so as to 2nd guess the idiot at the depot who will crack the valve to make sure it is nearly empty. This save air being sucked back in
by John Futter
Sat Sep 01, 2018 6:52 am
Forum: New User Chat Area
Topic: What flange is this?
Replies: 5
Views: 665

Re: What flange is this?

Again Harrison you have obiviously not read how to post on this forum Users should not link to external web sites especially Ebay and the like as these pics will dissappear leaving a thread that does not make sense especially to new members trying to learn what to do. Save a pic from the site and up...
by John Futter
Tue Aug 28, 2018 5:18 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Neon sign transformer power: a new look
Replies: 8
Views: 1634

Re: Neon sign transformer power: a new look

so just to clear up the graphs
Blue = Real R load
Black dashes = immaginary reactance and grey line - mixture of both
by John Futter
Thu Aug 23, 2018 7:01 pm
Forum: The Trading Post
Topic: *Working* Agilent/Varian turbomolecular pumps & controllers
Replies: 2
Views: 454

Re: *Working* Agilent/Varian turbomolecular pumps & controllers

Alex how about following the forum rules
your first post should have been in the please introduce yourself forum
by John Futter
Thu Aug 23, 2018 6:59 pm
Forum: New User Chat Area
Topic: Chamber contamination by vacuum grease
Replies: 22
Views: 1985

Re: Chamber contamination by vacuum grease

That O-ring is your problem
O-rings must be smooth and round in crossection any deviation from this will cause a leak.
Only apply vacuum grease to O-ring and then only enough to make the O-ring look wet