Thursday, July 25, 2013
I picked up a few aluminium prefused tungesten filiments from a company called Midwest Tungsten in the US of A. This is a bit overkill for a DIYer but the were cheap, from their surplus bin!
So I hung the plastic part from a wire inside the bell and began to pump down...
When I got to 40micron or so I turned on the MOT power supply.(I wrote this up in the blog a good while ago)