Now have my Cambro 12 qt. container and lid. Want to cut a hole in the lid for my Anova to mount through.
It should work if the teeth are fine enough. I would not try a wood keyhole saw. I would use a hacksaw if I had to make the cut manually. Hole saws that fit in a drill would also work well.
When you try it make sure the lid is well supported underneath and I would outline the area to be cut with duct tape.
@frjeff I used hole saw set from my local hardware chain that fit nicely to a cordless drill http://www.bunnings.com.au/craftright-16-piece-holesaw-set_p6372275
With hard plastics, high speed and gentle pressure is the best result to avoid cracking - I would recommend applying masking tape over where you plan to drill a pilot hole, then gently ease the hole saw centre bit into the hole and then let the weight of the drill do the work instead of trying to push it through. Finish with some fine grit sandpaper for a smooth finish.