Search found 1538 matches

by Dennis P Brown
Tue Nov 13, 2018 1:35 pm
Forum: Please Introduce Yourself
Topic: Hello from Panama
Replies: 1
Views: 55

Re: Hello from Panama

Glad you are trying to join the plasma club. Relative to some of your needs, I used a stainless steel welding rod for my inner grid; using a metal tube as a guide, I bent the rod around it a few times. Then using a vice to hold one of these loops, then using vice grips bent the others to be at vario...
by Dennis P Brown
Mon Nov 12, 2018 11:48 am
Forum: Please Introduce Yourself
Topic: Hello from Mississauga
Replies: 5
Views: 172

Re: Hello from Mississauga

Finding deals requires knowledge (where and what vendors to look for and how to enter a search criteria) and persistence. Biding techniques also matter for places like e-bay - pointless to end up in a biding war if you need to spend wisely. Some chinese dealers on e-bay often have deals but these ar...
by Dennis P Brown
Mon Nov 12, 2018 11:26 am
Forum: Vacuum Technology (& FAQs)
Topic: Advice on locating reason for poor vacuum?
Replies: 4
Views: 112

Re: Advice on locating reason for poor vacuum?

There are a number of "tricks" to detect leaks depending on their type: real or virtual (i.e. out gassing.) For a virtual leak, the best method is time; that is, keep the system running for a day or two and see how much, if at all, it improves. A slow but steady improvement tends to indicate one is ...
by Dennis P Brown
Sun Nov 11, 2018 12:18 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: My progress II
Replies: 14
Views: 1086

Re: My progress II

Impressive. Good start. Don't forget, neutron detection is also required for a real fusor. Also, a gate valve is needed to "throttle" the turbo so your deuterium isn't used up in just a few runs.
by Dennis P Brown
Sun Nov 11, 2018 12:06 am
Forum: Please Introduce Yourself
Topic: Hello from Mississauga
Replies: 5
Views: 172

Re: Hello from Mississauga

A two stage mechanical pump cannot get to 10^=4 torr, ever. Your gauge is in error. Adding a second mechanical pump will not lower the vacuum very much (assuming the system is capable of the 10^-2/10^-3 range.) There are no easy methods to get into or below the 10^-3 torr range without a diffusion o...
by Dennis P Brown
Sat Nov 10, 2018 10:16 am
Forum: Please Introduce Yourself
Topic: Hello from Mississauga
Replies: 5
Views: 172

Re: Hello from Mississauga

Hello and sounds like you have some good experience with developing electric induced plasma's. A two stage pump can't readily achieve 10^-3 torr much less achieve 10^-8 torr. Even a good turbo would struggle except with a very tight system that is extremely clean. So, I assume that is a typo. Along ...
by Dennis P Brown
Sat Nov 10, 2018 9:54 am
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: “Magnetically insulated grid IEC”
Replies: 26
Views: 6883

Re: “Magnetically insulated grid IEC”

A suggestion - since your device is on-view, why not post pictures of the apparatus with some details and descriptions. Then, I would think posting details (general) of your approach and how you believe your design will improve upon fusor performance would both better support your ideas and provide ...
by Dennis P Brown
Fri Nov 09, 2018 12:24 pm
Forum: Other Forms of Fusion - Theory, Construction, Discussion, URLs
Topic: “Magnetically insulated grid IEC”
Replies: 26
Views: 6883

Re: “Magnetically insulated grid IEC”

While my post was hard, I am not happy when someone makes claim's that they have discovered a breakthrough in fusion (net energy) without peer-reviewed proof nor at least some research that demonstrates they are doing something that is, at the very least, based on known physics relative to that goal...
by Dennis P Brown
Tue Nov 06, 2018 11:35 am
Forum: Images du Jour
Topic: putt-putt boat fusion
Replies: 6
Views: 454

Re: putt-putt boat fusion

The Japanese manufacturing an American PT boat is rather ironic; not unlike NIF with its claims that it would do break even fusion research rather than their real reason to exist - aid development of new weapons (they failed in that effort too.) Wrong laser, wrong illumination methodology,and wrong ...
by Dennis P Brown
Tue Nov 06, 2018 11:27 am
Forum: Please Introduce Yourself
Topic: Hello from the UK
Replies: 1
Views: 264

Re: Hello from the UK

Hello, Jake and welcome. Look forward to your participation in this forum. A lot of useful stuff is in the FAQ's and demo fusor's can be built to many levels of complexity depending on your ultimate goal (i.e. if you suspect you want to do real fusion at some future date, making a real chamber like ...