Search found 1261 matches

by Dennis P Brown
Tue Dec 03, 2019 8:08 pm
Forum: FAQs: Vacuum Technology
Topic: FAQ - Sealing a conflat flange and flanges in multiples
Replies: 10
Views: 279

Re: FAQ - Sealing a conflat flange and flanges in multiples

At red hot in air, what little oxygen the water might add (if any) is so many orders of magitude below what heating copper to that temp in air would already create is laughable. So, water isn't the issue here, I'd hazard to guess ( :) ). For high vac work (not a fusor), those copper seals are one an...
by Dennis P Brown
Tue Dec 03, 2019 7:51 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Steel or aluminum baseplates and other questions
Replies: 7
Views: 333

Re: Steel or aluminum baseplates and other questions

Aluminum is the best choice for 99.9% of people since hand drills and off-the-self hardware store drill bits (cheap chinese) can be used to drill holes. Steel isn't a metal most people can handle since high end drill bits and oil as well as a press are ussally required and even then, it is difficult...
by Dennis P Brown
Thu Nov 28, 2019 10:35 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Fusor construction questions
Replies: 9
Views: 530

Re: Fusor construction questions

From posts by others that generate their deuterium from heavy water, they (and others here in the know) indicate that it is essential to use drying agents for the gas; otherwise, fusion will mostly fail.
by Dennis P Brown
Wed Oct 16, 2019 12:42 am
Forum: High Voltage - Fusor Input Power (& FAQs)
Topic: Non-Corrosive and/or Dielectric Liquid Cooling?
Replies: 16
Views: 1467

Re: Non-Corrosive and/or Dielectric Liquid Cooling?

I will mention that propane is an excellent heat absober (better than water) and works great as a coolant; while not as hazardous as hydrogen, it is explosive in air (in the right mixture ratio's) so it must be used with extreme care and no leaks can occur. I have built a number of refrigerator syst...
by Dennis P Brown
Wed Oct 16, 2019 12:31 am
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: dynamic fusor patent, Salvatore Pais
Replies: 16
Views: 2268

Re: dynamic fusor patent, Salvatore Pais

A few more "words" on the various subjects mentioned here. The start of the universe neither required fusion nor any energy input (that we understand in the slightest) but this certainly say's there is more to the universe than our current physics understanding - in fact, all energy currently or pre...
by Dennis P Brown
Sun Oct 13, 2019 8:26 pm
Forum: Fusor and/or General Fusion Theory (& FAQs)
Topic: dynamic fusor patent, Salvatore Pais
Replies: 16
Views: 2268

Re: dynamic fusor patent, Salvatore Pais

Many in the real fusion community are laughing about this - but then, anything can be patented if it is different. A patent does not require anything to work, just not violate laws of physics. I won't worry about this effort enough to even evaluate it any further - zero money will be put into it and...
by Dennis P Brown
Thu Oct 10, 2019 8:04 pm
Forum: Vacuum Technology (& FAQs)
Topic: First ever Turbo experience
Replies: 16
Views: 1520

Re: First ever Turbo experience

I use dry air - that is, room air filtered and sent through dryerite; however, that was only for my high vac system. Frankly, I'd think for a fusor, it wouldn't really matter all that much if one didn't use dry air at all but just filtered air. Then used their fore pump, afterwards, to pump the syst...
by Dennis P Brown
Thu Oct 10, 2019 12:30 pm
Forum: Vacuum Technology (& FAQs)
Topic: First ever Turbo experience
Replies: 16
Views: 1520

Re: First ever Turbo experience

I have the identical type; mine has neither a heater nor those fluid lines that yours does. I use a small fan for cooling and that is more than enough. For operation, I simply get the system down under 100 microns, and use the "Pumping Unit" button to allow the turbo to get to full speed. The "STAND...
by Dennis P Brown
Fri Sep 27, 2019 11:51 am
Forum: Fusion --- Past, Present, and Future
Topic: The Wendelstein 7-X Stellarator
Replies: 0
Views: 279

The Wendelstein 7-X Stellarator

As I posted a while ago, the 7-X stellarator has meet or exceeded all objectives for its first major campaign (achieve the desired plasma densities that are required for a power plant and maintained for 100 seconds - all records for this type of device.) As such, they have been upgrading it to achie...
by Dennis P Brown
Wed Sep 25, 2019 12:18 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Demo fusor progress
Replies: 4
Views: 505

Re: Demo fusor progress

Impressive high voltage supply but like a real fusor supply, yours is also very lethal. Also, wood isn't really a very good material to encase high voltage systems - its water content can cause corona issues. Good machine work. Milling is, for me, fun. Lathe's are generally just a hassle.