Disassembling fountain pens !

Which fountain pens are possible to be lacquered with urushi? How to disassemble fountain pens for lacquering or just cleaning and servicing? And how to prepare them for urushi modifications - cover trim etc.
Do you know other pens with a removable clip? Or maybe you have some other tips & tricks for removing clips, masking the trim - please let me know in the comments.

Pens showed:
Montblanc Meisterstück 149 5:10
Pelikan M800 (M1000 works the same) 1:15
Pelikan M250 8:40
OPUS 88 Omar 7:15
TWSBI (Vac, 580 etc) 9:50
Edison Collier 10:50
Leonardo Officina Italiana Tainan Pen Show 2019 limited edition (60 pieces) 14:25
Sailor 1911 11:45
Pilot Custom 743 13:00

Pens mentioned but not shown:
Aurora Talentum and Optima
Conid Bulkfillers
Franklin Christoph 10:50
Montblanc Meisterstück 146
Other Pelikana (101N, whole Mx00 series)
Pilot Custom 742, 9xx
Platinum Izumo, President
Sailor KOP
Sailor ProGear (difficult)

Other (no clip removal)
Parker 51 10:25

No idea how to remove the clip:
Sheaffer Legacy 9:00
Platinum 3776 Century 13:30

About me.
BLOG: https://tamenuri.com/
INSTAGRAM:   / tamenuri_studio  
FACEBOOK:   / tamenuristudio  

I'm Michal and I'm a fountain pen addict and I lacquer pens with urushi lacquer. On my channel, you fill wind tutorials, videos from my urushi workshop, presentation of techniques, tools and materials used in urushi craft. I am also showing pens lacquered by me and other artists. I review pens but mostly urushi and I focus on this aspect of pen, not usual build, nibs and writing performance.
I am self-taught in this craft, most I know I do I learned from my own experience, trial and error. A lot of them. But also from Japanese books, and videos on urushi.

I make bespoke urushi pens to order, too, so please contact me If you are interested. It can be an ebonite pen I provide (I cooperate with several hight quality pen-makers) or you pen, provide the clip is removable and trim is not too elaborate.