Simple shelf support I designed using Fusion 360. This is just a support, so you'll need a piece of wood as the shelf. The supports need to screw into the wall studs and not the drywall. I used 4 woodscrews screwed into the supports to secure them to the studs.

Anycubic

Large Size Chiron

No

No

0.2mm

100

You should use 100% infill so the screw threads have something to grab onto. You do need to pre-drill in the plastic so the screw doesn't crack it.