Core Change! Docking Go!
Well I like to make a complaint from myself (before RG gundam released): Why HGUC rx-78-2 gundam didn't have core block system but its former HG 1991 version have it? Pretty strange. But this question I abandoned until today. I still doubt this 2001 released HGUC don't have core block like its 1991 predecessor until the latest RG gundam released recently. Googling around web doesn't fount any WIP's how to mod this HGUC until I try-and-error for myself. For this part, I concentrate on how to turn the core fighter into core block.
The first thing you gonna do is cut and trim the blue part of core fighter withe line shown.
file it, slide it into hollow where you cut it and apply glue for permanent solution.
Next, you got to cut the wings of core fighter . Just take the end of the wings. Cut according to the line shown.
this was 80% completed core block. U must file the back of blue part so it fill the lower part like photos below:
Images credited by dalong .net
You need to file the back blue part of core fighter until the end point of core fighter blue part reach end of thruster of red part of core fighter.
U need a Polycaps to put below core fighter because this will become the waist joint later.
Using Epoxy Glue A and B, it will strengten the bond of Polycap and plastic since Superglue unable to make such strong bond between rubberized Polycaps and plastic (or you can use hot glue gun as second alternative).
Sanding the lower part of core fighter like hell and it fits nice and snugly.Note the upper blue part of core fighter has been filed also like hell .
And thats all for the core fighter section. I leave you with this: