I have a toyo lens board (aluminum) that needs a larger hole. I've seen it recommended to have a machine shop do it rather than a potentially dangerous DIY hack job, but I'm having trouble finding a suitable shop near by.

Seems like most shops are big industrial shops that want a CNC file. One shop was recommended to me but I haven't been able to get ahold of them. I would think it should only take a couple minutes to stick the board in a machine and turn out the hole.

Anyone know of a place in San Diego they can recommend? Preferably around Miramar or Poway area.


Board currently has a copal #3 hole but needs a betax #5 (about 80mm diameter).