T-Scann 8 Mod - Focus helper

thingiverse

After completing the 8mm film scanner designed by Torulf Holmström ([here](https://tscann8.torulf.com/index.html)), I realized I had trouble to focus it accurately. Focus is achieved by moving the lens plate back and forth, and since there is some friction between that port and the metal plate where it rests, it was taking a several attempts before being able to reach an accurate focus. After a while I thought that using a threaded rod it should be possible to have a more precise way to achieve the correct focus, so I modified the lens plate from Torulf to add a hole and a recess to insert an M5 nut on it. This, along with a couple of additional 3D pieces and some other hardware parts finally allowed me to focus the scanner using a radio-like knob, more precise than the previous method.