The plastic worm hook is used to attach curtains that have a ribbon or line sewn into the top, on which the hook is wound by inserting the long end and rotating the hook 360°. The long end is then threaded through the movable eyelet on the curtain bracket.

I recommend printing the hooks from PETG with variable height and 4 perimeters (0.4 mm nozzle). The adhesion to the substrate is sufficient and no brim is needed. 100 hooks weigh 58.23 grams and the price is approximately €1.60 (at €27 for 1 kg of filament).

The resulting product is sufficiently flexible and firm at the same time.