Pentax K mount to Argus C3 adapter

lens adapter to use an Argus C3 lens with a Pentax K2 film camera. (1.75 mm white filament used to indicate where to attach the adapter to the camera)  

Print time on Ender 3 Pro: 2 hours 21 minutes 

total filament use: 8g/ 2.81 m

I removed the leica portion of the C3 adapter so that I had just the C3 screw thread, next I removed the telescope eyepiece from the Pentax K mount adapter. I then combined the Pentax K and C3 lens mounts together to make an adapter to use an Argus C3 Cintar lens with a Pentax K2 camera.