ShelfSys - 3d printed joints for DIY furniture

This is shelf system that i design for my kitchen but i think is multi purpose.
It only uses 3 different 3d printed models of pieces and 6mm screws.
For the frame I use a 1" thick pine sheet and cut it into lines of 1" and the shelfs are 15mm thick.

The parts were printed with this settings:
Resolution: .2
Infill: 100%
Raft and Supports: Yes at 45°