Here is my tutorial on swapping shoulder swivels on 25th Anniversary GI Joes. This technique should work on any figure with injection molded shoulders, including modern Star Wars figures. Mods may want to sticky this or add it to the “Custom Tutorials Index” thread. Because of the limits on pictures per post I have to make three posts to complete the tutorial.
Here are the tools you will need. Make sure your glue is made for use on all plastics or it won’t hold. I didn’t end up using the cup of hot water, but heating the arms in the water would make it easier to peel the shoulder away from the swivel.
Here are the arms on which I will be swapping the shoulder swivels, comic pack Shipwreck and Snake Eyes. First and foremost check to make sure the swivel sockets will fit in the destination torso!
After checking to be sure the swivel sockets will fit in the destination torso, cut the post behind the swivel on both arms
After cutting, gently peel back the shoulder pieces surrounding the swivel