K. James wrote:
.... http://www.aardvark.co.nz/pjet/valvelife.shtml

In particular, this section:
http://www.aardvark.co.nz/pjet/makevalves1.pdf
is an *excellent* description of making your own valves by electro
etching. It is very well written and easy to understand.

Good work, Bruce.

Bob