I needed a way to collect my caps in one place. This model holds 8 caps with ease. It easily works with flat-bill caps and works well with slightly curved bills. Very loved and curled bills will be flattened out with this design. 

Printing Suggestions:
- Print on side with slots going vertical. 
- Increase number of walls 4-5 should be enough. 

Use 2x #8 screws to attach the hat rack.

I used 2x #8 - 1inch screws and attached it to drywall. Just screwed it in with a screwdriver until it felt snug. I did not want to strip out the drywall. 

In your slicer, I would cut a small portion of this model to see if it fits your caps bill. 

Enjoy! 

UPDATE: 
10/27/2025

Version 2 with slightly thicker bottom rung for rigidity.