Custom controller case for rhythm games

I'm building a custom controller for DJ Max Respect and needed a case big and sturdy enough to have arcade buttons. 

It is designed for 24mm buttons. The case fits together tightly and if wanted to be extra secure, there is the possibility to keep it together with 8x 4x40mm screws and 8x M4 nuts.

General Settings: 

Material:  PLA
Layer Height:  0.2mm
Infill:  15%
Supports:  Yes