Focuser for refractor telescope

This is a focuser designed for refractor telescopes, for tubes with diameter ~103.5 mm. It can be adjusted on request. Designed from scratch. I printed myself and works very fine. It requires a number of small screws for assembling part1 to part2, and part9 to part10 at the final assembly step. Part3 and part4 should be glued together. Some lubricant is necessary between part2 and part3, and between part5 and part6.

It fit perfect to my DIY refractor telescope equipped with a vintage lens from a projector produced by Liesegang-Janar (some 80-100 years ago). Acquired images with the telescope can be much more impressive using a more decent lens with anti-reflex coating.