In article ,
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?

As I remember, for Octal, it's 1 1/8 inch. I remember because the
only punch I bought was a 1 inch one. ;-(

For the sure thing, try a early '60s ARRL handbook for their suggested
tool list in the construction sections.

(Hmmmm, dig, dig, dig).
From the 1969 handbook, they have 1/2, 5/8, 3/4, 1 1/8, 1 1/4, and
1 1/2 inch punches in the Recommended Tools list.

Digging out a Newark Catalog from the same era, it looks like 5/8"
for 7 pin, 3/4" for 9 pin, and 1 1/8" for Octal.

Mark Zenier
Googleproofaddress(account:mzenier provider:eskimo domain:com)