The folding shelf is not designed for heavy objects.

It was made for a wall of clapboard, a groove: 4.7×11 mm, suitable for a flat wall.

Used additional materials:

• the board from the trim is 10.7 mm thick and 150 mm wide;

• 6 nails 1.2mm diameter;

• 2 self-tapping screws m3

Printing is preferable with a large number of perimeters, I used 4 perimeters.

Also use the function of polyhedral holes.