Stackable shelf set

Stackable lightweight shelf system. Feel free to print as many rows and columns as you need. AssemblyShelves need to be glued together (apart from single version). Use glue of your choice according to material used. For PLA, clear epoxy works for me really well.There are 4 files, the difference is in thickness of side support structures:shelf single - both sides thick, usable as single shelf or for vertical stack of shelvesshelf middle - both sides are thin, glue to another middle shelf or left/right shelves for sufficient load capacityshelf left - thick left side, thin right. Needs to be glued with middle of right version to have sufficient load capacityshelf right - thick right side, thin right. Needs to be glued with middle of left version to have sufficient load capacityPrint settingsPLA or other rigid materialNo supportsAt least 20% infill0.5mm nozzle seems to work the best for default size but other sizes are OK as well