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

A simple "column of mercury" (the metal) can pull the necessary vacuum,
you can also run pumps in series--for this application--most likely
would be cheaper to buy the supply of mercury and set up a column to
pull the vacuum for you.

Regards,
JS