Everyone knows what can happen!And if a M8 bolt gets crazy with an M10 nut? You don't want that to happen in your workbench.This may be the only solution - keep them apart!-----The main goal here was to make this project printer friendly (and keep things decent!). So the wall thickness is 1mm.Hopefully your slicer will see this as a fast printable object without infill in walls, and it will print awesomely doing the walls like in vase mode.-----My tested settings:PLA0,4mm nozzle0,24 layer height3200mm/min15% infill (for the upper section)no supports needed-----You will find 2 versions, a fast printable one and another a bit slower but more robust.