Classic dumpster to collect your Bambu A1 poops
The author remixed this model.
Resized, streched and changed mesh to fit next to A1 printer
To connect lids to the bottom (from the original description):
"The lids can be secured to the body with really long M3 screws (M3x50), or (my choice) 10 gauge/2.5mm aluminum wire - or any kind of stiff-ish straight wire you might have laying around. "