This is a pull-up aid for a sun sail on a balcony.
Both 3d-print parts are designed for poles with the dimensions 60x60 [mm] and 100x100 [mm] . However, I have also attached the STEP files so that an individual adaptation to all possible poles is possible.
The cord is pulled through the upper part and deflected to pull it up. the cord can then be hooked into a carabiner in the lower part using a loop to fix the sail at the top. The two parts are each fastened with 20 mm wide Velcro tape. I used 4 mm paracord as the cord.