No matter how many I tried I could not find a stack solution that would handle the weight and momentum of a large printer. There was always to much wobble to feel totally safe. These make the tables feel like they are welded together.
I designed them in two pieces in order to avoid supports while printing. You can glue them together or just use the screws that go through them. I would also use a fairly thick wall and high infill for strength.
The author marked this model as their own original creation.