Nice pics on the teeny fusor and the MCA, and a very clever idea about catching the radium decay products in charcoal. Too bad your spheres weren't 4" instead of 3.5", then they would drop right into 6" conflat or LF100 weld flanges. 3.5" seems to sit between standard flange sizes, though one could hog out a blank flange and put up with the wide hat brim look...
BTW, how did you prepare the hemisphere for the mini-flange? Did you need to machine a weld lip, or are the thicknesses of the sphere and tube stub close enough so as not to matter? I need to add a 1.33" conflat to one of my end flanges, and I'm not looking forward to the job, as the LF100 blank I'm using as an end piece is pretty thick. I'll probably need to bore from the other side to make a weld lip of sorts - no fun. At least you have a mill....
Created on Friday, April 20, 2001 1:46 AM EDT by Richard L. Hester