Colorfabb PET-G economy
For adapter body:
Variable layer height
0-4mm -> 0.1 mm (for M3 screw thread)
4-18.8 mm -> 0.2 mm
18.8 - 22.8 mm -> 0.1 mm (for M2 thread)
22.8 mm and up -> 0.2 mm
0.2 mm layer height
Common for both:
Print speed 40mm/s
Top and bottom 0.8 mm
In my print the pogo-pin holes varied a bit, some were perfect, while others had some problems.
As the shafts are very narrow, I used a small drill to remove any debris or imperfections from the shaft walls as any blob will prevent the pogo pin from sliding in.
Some pins inserted smoothly, while others needed to be gently pushed into place with a pair of pliers (do not squeeze to much or push too hard otherwise they will break).
Once the pins are inserted they will either stay immediately, or after a wire was soldered on.
Please note that the force is from above so the pins will not slide out by itself.