I needed a way to hang my string lights around my Gazebo and these hooks work perfectly!  One of the design criteria is that I wanted them to hang inside and not interfere with the bug net or curtains.  Mission accomplished! These hooks mount to the sill above the curtain track using outdoor dual sided tape.  They've been going strong all year long.  They print with no support and I printed all 24 that I needed in one shot in a little under 2 hours.  They were designed to be a snap fit into my string lights.  I printed them in ASA but I'm sure PETG HF would work as well.    I included profiles for both.  Enjoy!