G1/4 Knurled Hex Bore Barb Fitting

I do NOT recommend using this in a computer or around electronics that have not been waterproofed. I am not responsible for any damage that occurs due to leaks or whatever else. User assumes all risk. Test thoroughly before use.

Print hot and slow to ensure good layer fusion. Use at least 3 walls, or more. Random seams are probably your best bet.

You can hand-tighten with the knurled knob, then do a slight final tightening via the 7mm hex in the internal bore (insert your hex wrench all the way through to the base).

**Requires a G1/4 O-ring of some kind.**

https://www.amazon.com/gp/product/B0DNSWXV7V

https://www.amazon.com/gp/product/B09JFQ3QKQ

NOTE: The fit between the tubing and the barb is very, very snug on purpose. This is to attempt to get the best seal possible despite the porosity of FDM prints. I included the .step file so you can tweak the sizing if what is included here doesn't work for you.