movable pulley
thingiverse
It's a movable pulley made to close a light sliding door. Just make two sets, screw one to the ceiling, and attach the other to a bottle cap with screws or glue. I use a plastic bottle as a weight. Use M4 x 45mm screws to fix the movable pulley when assembling. Other than that, use glue to assemble the parts. You can make it cheaply by using Bearing 16004 Compatible for the pulley part. Paste the URL below. Bearing 16004 Compatible https://www.thingiverse.com/thing:6157023
Download Model from thingiverse
With this file you will be able to print movable pulley with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on movable pulley.