John Smith wrote:
lw1ecp wrote:
At last!. I had been looking for vacuum tubes homebrewing for ages.
Very good job. Of course, having all the needed tools does help!. Does
anybody know about vacuum pumps homebrewing??? :-)
Daniel Perez

If you wish to go the vacuum pump route, an old refrigerator unit can
pull a vacuum. I would think you would need at least two in series with
a small tank (reservoir) in between the pumps ...

JS

I was thinking, a couple of air conditioning compressors off autos would
make a heavy duty vacuum pump.

JS