These wedge stands are made to angle a puzzle board at a 15 degree angle, for a more comfortable puzzleing experience.

There are 3 versions, and which are needed depends on where and how you prefer to have your puzzle area. For me, I'm using 2 + 1 + 2, to give a stable platform, with the lone medium in the middle. Experiment and find your own optimal position.

I did mine with 0.16 layers for the added aesthetic look, and to give the angle a good resolution, but there's no real reason to not use 0.24 or any other, the model itself has no real dependencies in that regard. The important thing is to print the model in the correct orientation, or lots of supports will be necessary.