A friend of mine lost the end nut, so I made a new one. To hold the nut better, I also prepared a washer.

I printed 

• AirBi_Nut from PETG, 0,15mm layer, 5 perimeters, 15% infill
• AirBi_Washer is printed from TPE, 0.1 mm layer. But PETG is also OK.

Happy printing :-)