I did this mod for the 1/144 HG Ez8. In my opinion, poseability of many 1/144 kits really suffer from the lack of this joint... so I decided to try to do something about it. Here's what was used:
- plastic sheet (1.3mm) - anything more than 1mm should be fine.
- 3mm drill bit
- 2 spare polycap A from a HGUC kit
- Some spare sprue from a plastic tree about 3mm in diameter
- hobby blade
- glue
1. Depending on the width of the chest of the mech, cut the plastic sheet to form the following structure on the right; it's basically 2 long strips with 3 pieces providing support in between. The space between the 2 long strips should be the outer diameter of the polycap (mine was 5mm):
Front | Back |
3. Assemble and glue the whole structure together as in the diagram above.
4. Cut the sprue to make extensions to fit the shoulders of the kit as below:
5. Glue the assembly in place and you're done!
The desired result can be seen in this little animated pic.
credit : http://gundam_base.tripod.com/