Pilot Parallel Cap With Pocket Clip

Here is a Very Specific Object.

As a certified fountain pen nerd, I have to say that I love the Pilot Parallel… ‘s writing ability. But the rest of the pen’s design has some, let's call them character flaws. They're all in the cap the pen comes with, chief among which being that doesn't include a pocket clip. So how do they expect you to take this thing anywhere? And then, the cap can't be posted on the tail like a normal pen. It just rattles and falls off. And then, each nib width comes with its own color coded cap, which doesn't help you at all if your favorite width comes with a cap in your least favorite color.

So this'll solve all three problems, while also serving a low-key bed adhesion torture test for your printer. What's not to love?

Update: I've been meaning to do this for ages, but I've been lazy. There are now seven cap options for you, one each for the available Parallel nib widths of 1.5, 2.4, 3.0, 3.8, 4.5, and 6.0mm. I knew about the newer two widths (3.0 and 4.5) and even own them, but I never got around to making caps for them. There you go.

There's also a blank cap you can emboss whatever you want into (or leave it blank if you prefer), or use for remixes, or whatever.

Obviously, thing the first, it will clip to your shirt or the inner pocket on your prepster puffy jacket, conveniently portable and ready to strike anywhere without warning.

Unlike the stock cap, this one can also be posted on the tail of the pen and it'll stay there.

This prints in two parts, the cap and the clip. Choose your color. Or colors! Ain't no law that says the cap and clip have to be monochromatic. Orient your print like so:

The clip slides into the dovetail in the cap, and it is pinned in place with a piece of 1.75mm filament through the hole. Just snip it flush with your nippers. You could also glue the clip in place, but I wouldn't in case you manage to break it. The clip is fast to print and easily replaced if you do. Trust me, it won't fall out.

The cap threads are extremely fine: a 0.75mm pitch, and not much deeper than that either. If I were you I would print this at the finest layer height you can manage. 0.1mm layers work well, and 0.2mm is too coarse. You should print the cap with a brim to stick it to your print bed; the contact area for adhesion is otherwise very small. You could also print the cap upside down if you like, but it has a fillet around the edge so choose which battle you'd like to fight.