Two-part strong clip / clothes peg

I don't like print-in-place clips. They lack strength, as they have zero tension as printed, so they cannot grip well things as thin as a cereal bag.

That's why I post this idea that I've not seen anywhere before: the clip is made of two parts that are just fitted one into another, and the clip jaws collide so that to fit the parts one has to pry them open (it's easier than it sounds). This gives a nice tension that can hold securely whatever one wants.

The stl file has intentionally one part upside down, so that it is easier to assemble the clip if one needs brim (I didn't use a brim).

One may scale the height to get a longer (and stronger) clip. This one is 0.75cm thick.

I designed this for PET-G filament and printed with 0.5mm nozzle.
Other nozzles should be fine, but other filament are likely to affect strength of the grip.
Layer height is irrelevant, the clip is essentially a linear extrusion of 2D shape.