Summary

Brackets for shelfs. You can fix it with

• 3mm screws (i used 3x16mm)
• 1.2mm nails (eg. for test purposes use the hole in the center of the bracket)

Designed in FreeCAD.

I've printed it with PETG, but you can use PLA, too.

Ping me, if you need more information or the freeCad file.