I refined everything a bit. And here is some detail about packaging:

that's how the stool parts interlink with the Tabletops to form the basic box:

All interlinking parts in place:

Next step, one stoolpart and 3 stool tops:

Some more layers of stool parts later:

While this all stays in place easily, the beam parts are a bit trickier. So I thought about placing some wooden plugs in the right places of the beams (represented by nails in the model. Easy to push in with pliers, since it's cottonwood):

first parts interlinked in the box:

(all parts of the same shape have the plugs in the same place,so you cant put them in wrong places)

All beams in place (point symmetrical, so the center of gravity is the middle of the box):

Last parts and the missing stool part (which is hold in place by the top of the box). The small beams fixed to the tabletop hods in in place):

comparison v2 and v3 of the box. Improved things

• hight reduced
• fixed the handle holes
• box topping much wider,so you can stack the boxes
• all side walls start ad ground level, which should make assembly easier

I also calculated the volume of all parts together: 100 cubic dm (so made from water it would be 100 kg).

I intend to make it from spruce, which should be ~50kg (oak would be about 85kg..)

Next up: Building the real deal. Difficult part might be to find the right wood, because for some reason wood comes in strange measurements in germany (19, 22, 24, 27 mm in thickness). But for the scaled down model, I could get hands on plywood with the exact scaled down thickness, so I designed with round values (20, 40, 60, 80 mm)