Customizable Snap-Fit Door Knob Safety Cover

thingiverse

This is my take on a child door knob safety cover that I created to cover 20+ doors without breaking the bank or dealing with complicated hardware like screws or nuts. I simply wanted something that would snap together over the knob, making it easy to install and use. Keep in mind that this design can be a bit tricky to remove from the door if you use tight allowances around the knob. This print requires about 15-20g of filament, which translates to approximately $.35-$.40 with a $20 roll. It's designed for round door knobs with a 51mm diameter and comes in two versions: one that covers the entire knob except for thumb and forefinger grips, and another that allows access to the lock. By the way, glow-in-the-dark knobs are a fantastic feature when your room is pitch black at night. With lower infill percentages, the glow is subtle enough not to disturb sleeping little ones. The OpenSCAD file for this design can be found here, allowing you to adjust various parameters such as front and rear removal, knob size, and allowances. Female Side: https://www.thingiverse.com/thing:3347343 Male Side: https://www.thingiverse.com/thing:3347342