Child Safety Lock for Round Doorknobs

thingiverse

This is a child safety lock that fits most doors perfectly. Kids won't be able to turn the doorknob with this cover on it because the entire cover turns instead of the knob. Adults can easily turn the knob by gripping the doorknob through the holes in the cover. If this part doesn't fit your knob, you can scale it up or down in your slicer easily. Remember that this design has only been tested on one toddler, so I can't guarantee its safety and effectiveness completely. I recommend using it only on non-safety critical doors like a coat closet. You should never use this design on something like a basement or shop door. I used http://amzn.to/2F5CYk2 filament for this project. Check out my Instagram at https://www.instagram.com/designtheeverything/. These files are designed to be printed with any nozzle size or layer height, and all files can be printed without supports. You'll find the original CAD documents included here, feel free to modify or remix them as you see fit.