Floor mounted magnetic door catch/stop
thingiverse
Magnetic door catch designed to be mounted with double adhesive tape (3M or similar) on the floor and on the door, no nails or screws required. Door piece can also be glued on for more resistance to pulling. Requires 4 button magnets of 10mm diameter, 1.5mm thick. The door piece is also provided in a longer version with screw holes should screws be needed, i.e. if the door has a rough finish or if you experience detachments of the piece due to too much of a pulling force. Since it's a sphere-based design, 0.1 layers are strongly suggested. I printed mine in marble-effect with 10% infill, seems strong enough and can seemingly take a good amount of abuse.
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