Resonator, making the hole and fitting the coverplate

I made a giant version of the cheapo compass cutter to make the hole for the soundwell. After carving a bit it was ok.

Then I tried to align the coverplate to get the screw holes right, but that was impossible. So I made a perspex template from the coverplate with a circle of the exact size and all the holes. With this lying on top of the body I can make all the holes at the right distance from the well.

Margins are a bit small. I'm considering a way to strengthen the holes. Since you have to remove the whole plate to get to the biscuit and bridge, these screws will go in and out a bit.