Archery Target mold

Two size 10cm and 20cm diameter archery targets. I made these for a friend (several iterations).He attaches a target to them, or just shoots at the targets from 50m (or whatever range he wants). There are several parts to this. I have the two target designs which we decided were too brittle (and in practice) if hit by an arrow when 3D printed, even with a reasonably flexible PLA, but I have included them here. They would shatter or fly off whatever they were mounted on. So he wanted the same de