Inspired by both the Pen Type C by CW&T and a model inspired by the Pen Type C by Peterson Daughtry

I wanted to design a multi-pen that uses Euro Style cartridges, although this is not it yet, this will serve as a stop gap for me, so thought, lets share it. I think for myself as I just need black and orange inks, I will probably just keep a spare black ink in the 3rd slot. Sure, I could carry two pens or a pen and refills, but I just want to be able to switch inks without the colours or inks being shit or hard to find. D1 and the Japan style thin refills suck and no one wants to admit it, someone needs to make a chunky 3-in-1 multipen for G2/Euro Style refills sooner or later.

The pen supports a 1/4" Socketed screw to keep the cartridge in place. But an included Peg model is now included so that it can help retain the more loose refills. An M7 screw would probably work too, although it'll be a bit tight. Print with 0.2 layer height or lower, supports probably aren't needed, but cleanup will be easy if you do need them

The Pen accepts 3 cartridges of the Euro Refill type, I want to make a variant that accepts Muji's Refills too. Included is a plain lid too. Some cartridges I've found can be loose, just give them a little washi tape to thicken them up a bit.

The holes in sides are to get a grip on the stowed cartridges so that they can be quickly removed and swapped.

The Smiley Lid from the video is available from here for members: https://than.gs/m/1209182 The video is also of the V1 Model, but loading and unloading is basically the same.

P.S: The refills in the photos are a Schneider Topliner Fineliner 970 0.4 in black, a Pilot G2 Orange gel and the "fill" of a Kokoyu Good Tools Orange Gel, (unfortunately they don't sell them out of the casing, unlike the other two).

P.P.S: Printed on a heavily modified Ender 3 at 0.2 layer height and a 0.4 nozzle, although I designed it originally with a 0.8 nozzle in mind I would recommend sticking with the 0.4 unless you're really good with the flow and overhangs, even with supports I was having some issues. V2 is printed in 3DTomorrow glittery red (I cant remember the specific name)

P.P.P.S: It's named Pen Type D because I was prototyping in a light brown and it is very, uhh, phalic, with the lid. When I reprinted in orange it's much less apparent, I felt I do owe it to you dear reader that I admit this juvenile origin for the name, if I were to rename it later it's probably going to get a much longer and sillier name.