Search found 77 matches

by Nicolas Krause
Fri Jul 10, 2020 1:05 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Chamber Construction
Replies: 100
Views: 31970

Re: Vacuum Chamber Construction

Hi Rich, the bubbles are very clearly coming from the connection of the hemisphere to the ring, and the hemisphere's don't rock against one another when I press them together, so I think the most likely culprit at the moment is the weld itself.
by Nicolas Krause
Fri Jul 10, 2020 12:41 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Chamber Construction
Replies: 100
Views: 31970

Re: Vacuum Chamber Construction

I was concerned about missing leaks on the underside of the chamber since a lot of the soap solution had dripped off, so I just completed a second leak test in the bathtub. Virtually all of the leaks appear to be coming from one of the main rings on the hemisphere. I'm unable to see any other bubble...
by Nicolas Krause
Thu Jul 09, 2020 11:31 pm
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Chamber Construction
Replies: 100
Views: 31970

Re: Vacuum Chamber Construction

Dennis I appreciate the kind words, but reality is a harsh mistress. Looks like I'm going to be redoing some of the welds!
IMG_1106[1].JPG
by Nicolas Krause
Thu Jul 09, 2020 4:42 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Chamber Construction
Replies: 100
Views: 31970

Re: Vacuum Chamber Construction

Just a quick update. I've got the chamber all assembled, and sitting on its frame. While I'm sure in the future I'll like having so many ports, at the moment it's mostly a lot of tedium anytime I try and put it all together. This is the second time putting it together today as earlier I was nearly d...
by Nicolas Krause
Sat Jul 04, 2020 2:34 am
Forum: Vacuum Technology (& FAQs)
Topic: LCD Vacuum Sensor
Replies: 5
Views: 912

Re: LCD Vacuum Sensor

Just a quick update here, I've decided to swap out the screen for a simpler text LCD. I was looking at the programming task ahead of me, and it required writing some graphics drivers for the dot matrix LCD. Rather than struggle with that task in a new language, I figured it was better to go for a si...
by Nicolas Krause
Sat Jun 27, 2020 8:45 pm
Forum: Vacuum Technology (& FAQs)
Topic: LCD Vacuum Sensor
Replies: 5
Views: 912

Re: LCD Vacuum Sensor

If I were in your position I probably wouldn't be doing this either Richard! But I'm learning a new programming language, I have a design in mind for the PCB that I quite like, and I think this will be a very nice little project. The first goal of this whole Fusor project is to learn, and this is he...
by Nicolas Krause
Fri Jun 26, 2020 3:34 am
Forum: Vacuum Technology (& FAQs)
Topic: LCD Vacuum Sensor
Replies: 5
Views: 912

LCD Vacuum Sensor

To use my thermocouple vacuum gauge and to continue improving my embedded development skills I've been working on programming a TI Tiva C Launchpad via the MeCrisp Stellaris language to read a value from the vacuum gauge and then print the value to the screen. It's been slow going, as I'm new to For...
by Nicolas Krause
Mon Jun 08, 2020 5:05 pm
Forum: Fusion --- Past, Present, and Future
Topic: Farnsworth Questions
Replies: 22
Views: 5012

Re: Farnsworth Questions

Has there been any research done in to non-linearities in the fusor setup? Star mode is an interesting configuration whereby the plasma seems to organize itself in to a non random structure. I appreciate that at the time that a lot of the initial work in chaos theory and non-linear dynamics was bein...
by Nicolas Krause
Sun Jun 07, 2020 2:56 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Chamber Construction
Replies: 100
Views: 31970

Re: Vacuum Chamber Construction

Just a quick update, but the files along with a small pick and a rubber mallet worked very well, and the last remaining bit of bolt has been removed.
by Nicolas Krause
Sat Jun 06, 2020 5:00 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Vacuum Chamber Construction
Replies: 100
Views: 31970

Re: Vacuum Chamber Construction

I appreciate all the suggestions posted here, I've ordered some small files off amazon and am going to try and remove the remainder of the bolt using them. In the meantime I've hacked together a bit of a crude mounting system using a hacksaw and some aluminum bar stock. I plan on cleaning up the cut...