Pilot Petit 1 Fountain Pen Longer Body

I really like my Pilot Petit pens, but ran out of ink. I accidentally bought the parallel pen ink which uses the standard refill size, not the "petite" versions, and it wouldn't fit in the existing case. I modeled a longer case that fits the parallel pen refills in Fusion360.

I would recommend a .2 nozzle so the threads are clean on the interior. It was a quick print, but to test, you can flip the model 180, and print just the threads to check for fit. Depending on tolerances and filament shrinkage you might want to size up 1-2%

I was testing this out with semi-transluscent filament, and while this print doesn't need infill, you can experiment with it, since it might show through. I also printed a version with "fuzzy skin" in Cura that feels nice and adds grip.