I am laying out a frame where I will have to cut approximately 200 aligned 35mm circles in a matte board or foam core board. I will be putting plastic coins into the holes and backing with another board (exposed foam board or something with a little give to mould to the piece) to secure the coins from sliding or rotating.
I purchased a Fiskars Circle Cutter but have discovered through testing that while the device can make the circles, it lacks the depth to cut through the whole board. I checked to see if they sell a replacement blade with more exposed length but they do not appear to.
This then resulted in me fiddling about with an Exacto knife trying to make a clean completion cut.
If I had to do a few holes I would accept this method, but I am somewhat nervous at the thought of repeating the process 200 times without scoring or marring the matte.
Is anyone aware of a simpler technique?
I believe a punch is probably the correct tool, however I am reluctant to invest too much for a one-off project. I also considered using a bore saw and my hand drill but am concerned that it would just make a horrid mess of things.