First off, welcome Ron [now I'm not the new guy :)]
I won a diffusion pump on ebay, but it is not here yet. It holds
100ml so I will put Santovac 5 oil in it. That 100ml of oil costs
about $140 but should give little to no back streaming with no
baffle, cold cap, or cold trap.
Yesterday I welded up the sides of my chamber, and the top ring. It
is half inch plate, about 18 inches wide and 17 tall. After I get
the pump I'll machine the port for it and weld on the bottom. Then
mill the top flange flat and mill the Oring groove. Then I get to
make 7 covers for the ports. Why so many ports? It is easyer to make
the port in each side piece before it was welded together, so I'll
just block off unused ones. I plan on two windows and a power feed
through port. Later I may use the chamber for a glove box to weld
titanum in an argon atmosphere, so there goes two more ports for
gloves. I'll post pics of it now.
Ken... look on the bright side, moving gets rid of stuff ya dont
need.
Les
