Quote:
Originally Posted by Freight Twang
You can use a metal holesaw bit, you can get at Home Depot or Lowe's, but the best way is with a GreenLee punch. The cheapest place to get on of those is a www.tubesandmore.com. the 7/8" does the 12ax7 sockets and the 1" does the output socket. |
Each of their punches are $40+ which is ridiculous.
Go with the Harbor Freight SET at $16. I've used it plenty of times.