My blade lock broke, and since I like to carry it in my back pocket, I wanted it replaced. A factory one cost about $18 before shipping, so I figured I would try to make one. It isn't perfect, but it fits and works.
Orient the model with the blade locking tab pointing up and use supports. I would also print a little hotter than normal for better layer adhesion and ream the hole before attempting to screw it in place. (I broke the first one because I printed it on the side and the screw split the model at the layer lines)
The author marked this model as their own original creation.