Horizon's pen(functional!!!)

I saw a post about Horizon's pen on reddit couple days ago, and his project looks stopped, so I made my own one for those who also want this cool looking pen.

Things you need before printing
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1.a pilot G-2 pen
2.some superglue
3.some sandpapers

How to make it
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1.To assemble, you need to modify your G-2 pen first, all you need is cut the ink cartridge right between letter A of JAPAN on the cartridge body, and remove the clip from pen like the picture above, also we don't need lower part of the pen.
2.Put modified pen into *Lower barrel* ,screw the *Tip* and *Tip ring* into *Lower barrel*, and glue the *Button* onto *Lower barrel*.
3.Slide the *Push tube* into *Upper barrel*, and glue the *Clip* onto *Upper barrel*.
4.Combine two parts and glue it up.

I also made a fully 3D printed version(at this version, you won't have to cut the ink cartridge) but I think its too hard to print, so I post another version of it to here. Anyway