I've drilled up to 3" holes in 3/4" acrylic and ~2.5" holes in 1/8" acrylic. Clamp it to a piece a wood (or even better, sandwich it between wood) and you'll be fine.davidt said:I would really be hesitant to use a wood cutting hole saw for a hole this large. Has anyone drilled a 2 or 3 inch hole in thin acrylic with a wood hole saw? Just wondering because from the posts listed here it sounds like it works fine for smaller diameter holes.
I found a nice DIY site, at http://www.reefkeeping.com/issues/2002-04/jg/index.php that looks to match with my advise, so I would take it to the bank.davidt said:I would like to see the info on where to get holes saws made specifically for acrylic. Do you have the info? Just want to see how much they are.