Reward Coinbank

### edit:
I've now cut, tested and fixed the design so it now works. The one in the pictures is made of 2mm perspex (from the scrap material pile). The door at the bottom is made from 5mm perspex to add strength, 2mm worked, but just seems to flimsy to have a 3 year old grabbing.

The crazing was due to the material being too cold when cutting and so overstressing with the laser heat. If you have the same problem, just put the pieces in the oven at 100-110C for 50 minutes, then leave to cool