Design and Make Camera Lens using old projector lens with 3D printer

I'm using an old projector lens (MOG Diaplan 140/3.5) for camera lens, by utilizing 3D Printing to create other needed components. The finished unit is an M42 mount lens that can be easily adapted to digital camera using the right lens adapter. I plan to add a second video later on for the shot result when possible.

1:30 getting measurement for infinity focusing
2:37 there is an aperture holder inside mounting part, but in this project I will just leave it wide open
3:08 at the front of the lens is a stopper/holder to prevent projector lens from sliding off inner tube, which also function as a 52mm ring for filter, hood, or lenscap.

You might see some printing slit on the tube surface. Later I found out that the filament extrusion stepper motor is faulty and needed replacement.

Result / test photos in this link : https://www.youtube.com/watch?v=O1RnCSgTECI

As a side note, this is my second project in English, and obviously need to learn more. Have a great day :)

STLs and RSDOC (Designspark Mechanical drawing) are available here https://www.myminifactory.com/object/3d-print-3d-printed-photography-lens-mechanism-for-projector-lens-125175
Designed using Designspark Mechanical https://www.rs-online.com/designspark/mechanical-download-and-installation
Slicing with Ultimaker Cura https://ultimaker.com/software/ultimaker-cura
K&F Concept Adapter website https://www.kentfaith.com/ , you can also find in most online marketplace

Видео Design and Make Camera Lens using old projector lens with 3D printer канала W3DE Studio