Our, 42 mm thick, garden table does not have a solid tabletop, but only small ribs on the underside. Since I couldn't find a suitable minimalist clip so soon, I made this clip. The clip clamps just right for 42 mm thick table tops. A fill of 15% gave just the right spring force in my case. The added basic straight design can be used to customize the clip. Although this design is not parametric, the thickness of your own tabletop and the clip slope in this design is probably easier to adjust.

Should the angle of the clip provide insufficient clamping, it can be adjusted later by slight heating and bending of the respective angle. However, be careful not to heat the filament too much.