That table legs use conique curve, providing stiffness with minimal material. In my test of load, on one set of legs screwed to the deck, I did put 5 kg of steel. As table ("sturdy" model) for the test was 72 mm high, a table 10 times bigger and higher (72 cm), could bear 5000 kg (it means three European cars).
Different configurations are available with two sets of legs, linked with roman screw (L+R), as ‘club table’ or ‘bar table’, roman screw being used to adjust table high. However, even if screw is quite tight fitting, table in bar position could sway.
Project was done with OnShape software. While printing, the biggest problem was legs (diameter of 4.35 mm) overhang starting about 60 degrees. Adding support was out of scope due to bad surface. So I had a lot of curling first, but strangle enough, mostly present when only legs were left to print. On the end, I reduced printing temperature to 205 degree from 10 mm up. I used also variable layer height, with most layers being 0.25 mm for those legs. However even more radical step was necessary: I had to dry my PLA filament for 4 hour in my kitchen oven (45 degrees). I guess printing both set of legs (L+R) in same time could also help, delaying extruder return to the same leg.
The author hasn't provided the model origin yet.