On Jun 16, 2017 07:14, "John P" <j.m.price@...> wrote:
Drilling all those holes is a lot of work. Get one just a little out of place and it will stand out like a sore thumb. I've always found it easier to simply make a big round hole of the appropriate size using a punch or metal nibbler and putting a grill over it. Lets more sound out of the box that way also. -- John - WA2FZW