Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4924422.
Updates:2021-08-18 Replaced barrel STL with corrected threads that were missing on the original I uploaded
Reworked all parts for a new design, improved tolerances and better leak proofing.
The section should work with the original design, however the barrel and cap may not fit well due to the changes made for this version.
This was designed using the Jowo #6 nib unit.
The printed parts do all assemble together, but make take a few goes to get the action smooth and may need a good grip to get traction. The tolerances are very tight requiring good dimensional accuracy from the printer.
The green pen is printed in silk PLA, the red in transparent PETG. Silk PLA works especially well, helping with rigidity and especially leak proofing.
No supports are needed, but a brim is essential to prevent the parts from falling over due to the very small footprint with the printer bed. Printing with 4 walls is recommended for rigidity and leak proofing of the section.