These first designs were not successful as it not only did not fit in the slot of the door frame where the rod goes but it also did not achieve the horizontal translation movement I needed.

I then came up with this design that would fit the cylinder from the door knobs tighter and I added a cut to the top so it would fit into the door frame slot.

I then began to work on the door knobs which were easier and only required one print because I had a good idea of what I wanted to make.

I decided to print 2 separate knobs one with a cylinder sticking out and one with a hole on the top that would fit this cylinder.

I also needed something to support it when it would sit normally or if it was being pushed or pulled.

I solved this by making two disks of 2 different sizes, one would be glued with acrylic to the cylinder on the knobs (plastic on plastic) and the other would be hot glued to the actual door (wood on plastic)

The smaller disks that were glued to the door knob would resist any push and pull forces as they were placed on the outsides of the bigger disks and when put together, it acted as a clamp to the door. The bigger disks were glued to the actual door and allowed the cylinders of the knobs to stay in place.

After designing all the parts I put them together in an assembly in Fusion and used motion link to make sure the mechanical movement I had imagined would actually work and it did.

The door knob allowed about 4 inches of movement total left and right and was achieved with one 90 degree turn which was my goal.