I found a decent support but not high enough for what I wanted to do with it. So I redesigned everything so that it fits my expectations perfectly, while basing myself on the original model which I find brilliant!
Dimensions :
The legs of the upper Lack do not need to be screwed thanks to the constraint provided by the angles. The screws I used to attach the table are Fischer PowerFast 3.5x30 PZ2.
I advise you to fix the supports in the corners of the table below even if you are afraid that the legs will not fit. This is exactly how you have to go about it so that it doesn't move anymore!
The author remixed this model.
I needed a more substantial height so I redesigned the entire support to make it 15mm and also to adapt it to the screws I had on hand