Helios 44 to Sony (Zenit M39x1 Mount to Sony E Mount)

thingiverse

>>>> HELIOS 44 to SONY E Lens Adapter This is a camera lens adapter for the ORIGINAL Helios 44 58mm F2. The mount is an M39 with a flange distance of 45.2mm NOT an M42 with a flange distance of 45.5mm on the Helios 44-2. MOUNT DETAILS: 1. Zenit M39x1 Mount 2. Flange Distance: 45.2mm If you have the Original Helios 44 f/2 then this is the adapter that you want to print. The flange distance on the Original Helios 44 lens is 45.2mm instead of 45.5mm on the Helios 44-2 and beyond, so I modeled this to fix that issue. You can get an M39 to M42 adapter and use that to mount on an M42 (42x1mm) camera adapter, but the flange distance will be off by .3mm and you will not be able to fully focus to infinity. Plus this adapter can be printed for less than a dollar's worth of PLA so it might be worth it just to print it. It's not perfect, but I can finally use this lens to some degree. BE ADVISED: This is V1 and there are a couple of issues that need to be resolved. But for me, it has been working pretty well. DETAILS: Printing this took about 4 hours and 26 grams of filament with my custom Cura print settings. I had issues getting the M39 inner threads to adhere on the inside, that is why I used custom settings. Once I started using these settings, I never had an issue with it. I added the preset file in the downloads and have written it down below if you want to use my same Cura settings. Be sure to print in Black or paint black afterward (including on the inside). This stops light and reflections from getting to the sensor. BONUS: I have made a MACRO CONVERSION version for those who want to use this lens as a macro lens for closer details. It is roughly 18mm longer and prints at a time of 6 hours and 30 minutes. The file is in the download section. INFO & SETTINGS Printer: Stock Creality Ender 3 V2 (With upgraded bed springs) Print time: 3 Hours 49 Minutes Material: PLA Color: BLACK (Or needs to be painted black later on, especially on the inside to stop reflections) Temperature: Hot End 200 C/ Bed 60 C Bed Adhesion Method: Hairspray Bed Leveling: Manual CUSTOM CURA SETTINGS (helped me print the threads perfectly): 1. Start with the Default Super Quality 0.12 2. SHELL > Top Layers = 18 (for stronger bayonet connection on the camera) 3. SHELL > Bottom Layers = 2 (Needed to change to enable other settings that helped with the M39 threads) 4. SHELL > Outer Wall Inset = 0.2 5. INFILL > 10% 6. INFILL > Extra Infill Wall Count = 1 7. INFILL > Infill Before Walls = YES (Checked Yes / Helps the threads have something to hold on to and not disconnect ... in theory) 8. SPEED > Wall Speed = 50 (Not sure if this helped or not, but it made it faster and still printed the M39 threads without issue) 9. SPEED > Top/Bottom Speed = 25 10. EXPERIMENTAL > Infill Travel Optimization = YES (Checked Yes) I'm sure you or someone else may have a quicker or better way to get this to print fairly quickly and have the M39 threads stay intact on the inside, but this is what I did to accomplish that.