Coinslot for Ikea Ribba 23*23 with stencil to cut the hole

My wife wanted to make a piggy-bank out of a Ribba of ikea - so I created a thingy to insert the coins. This goes throug all layers of ribba. Additionally I created a stencil to cut the hole with a milling cutter on a dremel 3000 with the milling head (schablone) to make the hole better fitting. Fusion360 File added if you want to change anything.

print both models upside down, then no support is needed