Back legs are circular cylinders, front are elliptical cylinders. Remove the existing rivets before installing. Adjust the model sizing to fit your tolerances.
Best to print as dense as you can, as it's supporting your weight. I printed at 50% infill, 4 walls/floors.
Even better if you finish with Plastidip or something like that to make the feet non-slip.
The author marked this model as their own original creation.