Pre-drill round holes in the corners of your square hole. That way, any
cracking will stop at the corners.

Ed wrote:

I need to cut a square hole ( 1" x 1.25" ) in a standard plastic
electrical box cover ... in this case, its the type with one hole for a TV
jack. The new square hole will be to mount a chassis jack for Anderson
Power Pole connections. ( Powerwerx HS-4 ).


Can anyone advise of the best method and tool to do this? I am concerned
about cracking the plastic if I don't do it right.

Ed K7AAT



--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"©

"Treason doth never prosper: what's the reason?
For if it prosper, none dare call it treason."

"Follow The Money" ;-P