Search found 643 matches

by Andrew Seltzman
Tue Jun 23, 2020 10:19 pm
Forum: Vacuum Technology (& FAQs)
Topic: Turbo repair - The Nightmare Begins
Replies: 5
Views: 391

Re: Turbo repair - The Nightmare Begins

May be worth it to buy another controller, they're pretty cheap:

[url]https://www.ebay.com/itm/133173568909/url]
by Andrew Seltzman
Tue May 19, 2020 1:55 pm
Forum: Announcements and Site Administration Topics
Topic: Finished PhD, now a postdoc at MIT
Replies: 12
Views: 6268

Re: Finished PhD, now a postdoc at MIT

When you feel that you are stuck with your dissertation abstract and the long hours in front of your monitor do not bring any results, it may be time to send your request to us. <Facepalm> Admin, feel free to delete my response too... Also my dissertation abstract is still better: The Electron Bern...
by Andrew Seltzman
Sun Apr 26, 2020 8:47 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage
Replies: 21
Views: 2599

Re: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage

I think one benefit of electrolysis at home is no hazmat or freight shipping issues. Same can apply to using deuterostiks at home, if some enthusiast starts a filling service. Can items be listed on ebay with a price that includes refundable core fee? - Rich Feldman Would anyone be interested in pu...
by Andrew Seltzman
Fri Apr 10, 2020 10:21 pm
Forum: Vacuum Technology (& FAQs)
Topic: First ever Turbo experience
Replies: 38
Views: 7116

Re: First ever Turbo experience

The heater at the top is for baking out the pump when removing water vapor or contaminants if it will be used at UHV vacuum levels.
The fan keeps the motor cool when the heater is on, or when pumping very high gas loads, or gasses with high molecular mass such as argon.
by Andrew Seltzman
Fri Mar 20, 2020 5:21 pm
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 135
Views: 20894

Re: Coronavirus pandemic

All the charts you want:
https://corona.help/
by Andrew Seltzman
Tue Mar 17, 2020 4:46 am
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 135
Views: 20894

Re: Coronavirus pandemic

Wow, it was in stock on sunday when I ordered some. the spray bottles are in stock https://www.alliedelec.com/product/mg-chemicals/824-500ml/70125490/ https://www.alliedelec.com/chemicals-adhesives/cleaners-degreasers/?category=3%7C2510421%2F4198939%2F2547431&n9318=Isopropanol%2CIsopropyl%20Alcohol%...
by Andrew Seltzman
Tue Mar 17, 2020 3:25 am
Forum: Announcements and Site Administration Topics
Topic: Coronavirus pandemic
Replies: 135
Views: 20894

Re: Coronavirus pandemic

1gallon 99.9% isopropanol https://www.alliedelec.com/product/mg-chemicals/824-1g/70125491/ benzalkonium chloride concentrate (same thing as lysol/clorox wipe liquid), makes 32 gallon https://worldwidejanitor.com/disinfectants-sanitizers-c-74/pure-mint-odor-10-disinfectant-1-gallon-p-51476 Both can b...
by Andrew Seltzman
Sun Mar 15, 2020 8:10 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage
Replies: 21
Views: 2599

Re: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage

I think the non pro versions were discontinued. The one I took apart was the brunton hydrocore (a rebranded hydrostick pro). Both the Brunton hydrocore, and the hydrostik pro version come full with hydrogen. Depleated uranium is usually only used for storing tritium. It has to be heated to several h...
by Andrew Seltzman
Sun Mar 15, 2020 4:44 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage
Replies: 21
Views: 2599

Re: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage

No special method to purge the residual hydrogen was used on my metal hydride cartridges. They were emptied of H2 down to atmospheric pressure then filled with D2. The H2 to D2 ratio would probably be a few ml H2 per 11L D2.
by Andrew Seltzman
Sat Mar 14, 2020 2:57 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage
Replies: 21
Views: 2599

Re: Mark III Advanced Pressure Control / Deuterium Generation from D2O / Metal Hydride Storage

It was a used one that I got on ebay with a Brunton Reactor fuel cell. It was left screwed into the fuel cell for probably long after it was empty and air with moisture likely got in (by permeating through the fuel cell membrane after there was no flow of hydrogen out of the cartridge) and destroyed...