This shoe rack stacks vertical to keep floor space usage to a minimum and showcases your shoes very nicely!!! This design uses a 25x25mm steel tube as the back bone on which as many shoe holder modules you can fit as you want. There is a hole in the back of the module for a heat insert in which an M4 screw can be placed. If you dont want to use heat inserts, use M6 screws, but be careful with the first time screwing it in. Don't overtight it!

I used a steel tube with a wall thickness of 2mm. You can also use aluminum, but it is a lot light and might not be as sturdy.

The parts can be printed with PLA, but for extra strength use PETG, like I did.

I am working on a V2 with TPU padding for a softer grip. If you have any suggestions/improvements to this design that you want to see in V2, let me know with a comment.