Use it to anchor a door or window in any position. It uses a clamp-like mechanism. Screw the bolt to make a friction with a perpendicular to the door surface.

A door can still be fully closed with a mounted stopper on it. Just unscrew the bolt so the foot lifts above a possible obstacle. When mounting, reserve at least 15 mm of surface space under the holder to fit the foot in the fully lifted position.

To mount the holder on a surface, several options are available:

• Glue. I used thermo glue (glue gun). A thick, equal layer of glue makes the connection tough enough. I think it is possible to mount it on epoxy or other types of glue as well.
• Double-sided foam tape. I tried this method. It worked, but the connection was not tough. It turned out to have limited friction force because of the danger of ripping off the holder. It's able to fixate a door, but not tight enough to keep it fixed under the strong draft or something.
• Screws. There is a separate stl for the holder that can be mounted on two screws. Holes have a 5 mm diameter. This method provides the strongest connection. Be careful. Don't rip the doors off their hinges if using this method.

Three sizes of bolts are available. Use the shorter one if the gap between a fully lifted foot and a perpendicular surface is lower than 20 mm.

To connect the bolt to the foot, place the foot on the floor and screw the bolt through the mounted holder to the foot connection point. 

For print settings, I recommend having at least three perimeter lines. No supports are needed. The stopper works well printed in regular PLA. The model was made with a tolerance of 0.2 mm.