>>6362587>Beginners: practice on cheap figures first.I've seen some people on 2chan that customize monster sofubis that fill in the figure with putty and put revo style joints in there. But also taking a more human sofubi figure and putting an entire SHF figure in there.
Consider that you can hack off joints from almost any figure to cannibalize their joints, for instance using the knee joint of a GI Joe figure in the arm of a larger figure.
Here's someone using some rubber tubing to hold their joints in place.