Geoffrey S. Mendelson wrote:
JIMMIE wrote:
I was going to start a valve project and wanted to purchase some hole
saws for cutting out the socket holes. What sizes will I need for 7 9
and octal sockets?

I don't remember the sizes, but holes were never sawed for tube sockets.
Instead of using saws, which are very difficult to control and make a mess
of everything, hole punches were used.

Punches are certainly the way to go if you have some or can borrow some.
Otherwise its kind of expensive to have to go out and buy some for a
one time use.

An alternative is the 'unibit' type of drill bits. They make them large
enough for 7/9 pin sockets. See Harbour Freight.

GL with your project.

-Bill