Does anybody here know where I can find data on vacuum tube manufacture? I know about the Frechman who makes his own. Answered
The problem I am having is that certain tubes- say a 12AT7- have certain dimensions for the plates, cathode and other parts. Would any one here know where to get enough data to make this tube and others so the results are that of an electrically equivalent tube? I am looking for the shop or " mechanical" drawings for common tubes of the 50's all the way to the late Compactrons.