How To Remove Namiki/pilot Maki-E Pen Clip？

[WillyVanDerKuijlen]

For Namiki/Pilot no.5 size(such as many Nippon Art) fountain pen

(you can see a gold metal ring in this pen end)

it has the similar body type as pilot 74 or 912, you can directly screw it and it can disassembly easily.

But for Namiki/Pilot No.20 size pen its structure is so complex that I cannot find a way to screw.

However, I still want to know the way to disassembly Namiki/Pilot No.10 size(such as yukari type) pen cap and clip, is any way can find out or any tool can be recommended？Thanks a lot!

Edited May 15, 2019 by WillyVanDerKuijlen