Adding a window/inspection hole in Quicktime or similar scattershield.

67Dart273 said
^^I once cut some 1 1/2" holes in 5/8 plate with a hole saw, FOUR of them (holes, not saws). Slowest drill press you can get your hands on, easy on the pressure, and LOTS of cutting oil.

I think you get one hole for checking plate departure.

You can wreck a can doing that.