There are two versions of this.

One version has flat bottom and top surfaces. The other version has a 30° indentation on both sides.

Let me know if you'd like additional angles such as 45° or 60°.

Let me know if it also fits on a 250 x 250 bed, if you have one.

I have included STEP files for your convenience.

Please leave a well deserved like at the original maker's model.