About this 3D model

I thought of the idea to make a jigsaw puzzle, so I loaded up Onshape and it was surprisingly easy to create, so I ended up making 3 different difficulties. Easy: 9 Pieces Medium: 15 Pieces Hard: 30 Pieces All of the different difficulties can be assembled on the same board. If you enjoy this puzzle, please leave a rating! it really helps me out. Thanks!