Door "Ninja Lock" Redesign

thingiverse

I had a rather unusual problem with no apparent solution. My air conditioning was somewhat unbalanced where one bedroom was far too cold and the adjoining main room was significantly hotter. I had been keeping the door to this room closed as my cats were getting into this bedroom and causing problems and making a mess. So, I wanted to somehow prop the door open so that air could exchange but keep the cats out until I reworked the ducting somehow to fix this. Of course, the first thing I do is go to Thingiverse and seek a solution, and in short order, I found the Ninja Lock! https://www.thingiverse.com/thing:1032595. I printed that design but found some issues with the print design/structural integrity that I didn't like, and I wanted it longer. Also, it scratched up my door frame pretty badly quickly. So, I used the Ninja Lock as my source template and designed something very similar in Fusion360. I beefed the part up significantly, added fillets at all the sharp angles/weak spots, made it longer and thicker, and added a button to make it easier to push the lock open from inside the room since we are leaving it on all the time right now. Lastly, I added some felt to the part that holds the door jam to prevent more damage. How awesome is this hobby?!!! A year ago, I would have never thought I could see a design that was useful and then use 3D modeling software to completely remake it exactly as I want it and produce copies of it rapidly to address an immediate need. The original designer meant it to be a child lock, but I wouldn't trust it for that personally since my four-year-old could probably bust through it. But for my needs, cat sequestration, it works perfectly (see test subject alpha picture, AKA Rambo). *UPDATE* I've added a second redesign with an over-travel stop to protect the part that is most susceptible to breakage and beefed up that area a bit. My first version was broken when someone pulled very hard. The first version works fine if you're careful, but the second version is much harder to break.