Shelfparts

Test and works.
This is a simple system for a small shelf. The parts can be screw together. Then you can screw the parts at wooden boards.
There are 3 lengths:
248 mm (you can print this part diagonal)
200 mm
152 mm
With the 2 other parts (up and down) the dimension is 258, 210 and 162 mm.
To fit the parts please use this screws(for wood): 4x30 mm
Edit:
Regalhalter V3 (Super light)