Single layer cross for centered adjustment of lens above imx708 image sensor

I had removed Raspberry Pi v3 camera autofocus mechanism
https://forums.raspberrypi.com/viewtopic.php?p=2099545#p2099532

and need to superglue CStoC metallic adapter ring (with free space for connector dremeled away) onto v3 camera PCB so that it is centered. I 3Dprinted this single layer model, it just fits inside CStoC extension ring and gets fixated by screwing CS lens into it, see cover photo. The other photo shows cross above photo shot with v3 camera. Since it is definitely not in focus, the cross is not sharp. But center can be moved into middle of camera preview for fixating extension ring on PCB with superglue.

I had done single layer prints before, but not a useful 3Dprint with less than a minute print time sofar. This website seems to have problems with such a small print as well, I am not able to attach Prusa MINI+ .gcode file. Anyway, the OpenSCAD file I created and exported STL are attached.

I had problems to get the print off print bed, so it is not perfectly flat. But I would say “good enough” for the purpose. I learned that width of the cross lines had to be 0.43mm so that PrusaSlicer generates them at all with 0.4mm nozzle.

The third photo shows CStoC adapter ring superglued to camera PBB. 4th photo shows that center of cross si not perfectly in center of photo — I will go with that for testing next, perhaps I will have to separate and then superglue again better centered.

I decided to remove Raspberry v3 NoIR camera autofocus after I got cool 12 second exposure astro photos with post processing from @jbeale:
https://forums.raspberrypi.com/viewtopic.php?t=348014#p2086185
The extension ring superglued to PCB can be used with a CS or C mount lens as shown. What I really will do is to mount v3 camera (with very light sensitive Sony imx708 sensor) directly onto my cheap telescope for eyepiece projection:

First tests after removing the cross are promising (92cm diameter C60 fullerene hanging 3m high in room):
https://forums.raspberrypi.com/viewtopic.php?p=2099581#p2099581