This simple print allows you to hang coat hangers on the clothes line without them sliding or unhooking and falling on the ground.
It will take a hanger with a hook of up to 8.5mm diameter.
There is enough spring tension and surface area to stop the clamp from sliding along the line.
Doesn't require support when printing but the use of a brim is recommended for better bed adhesion. I printed this with a tree support however it really didn't need it.

Creality

CR10S PRO

Doesn't Matter

0.2

60%

Would be better in PETG or even ABS for longevity in outdoor environment.

Use a wall count of 4 and 60% infill to ensure the clamp is strong.

Use of a brim is recommended for better bed adhesion.