Missing neck pegs

I agree heating it is a good way to pop a peg in there. A screw would work as well. Have you looked at barbell piercings? they allow you to screw off the head once both sides are inserted

Well to get em out I usually just heat and pop with a hair dryer, I use needle nose pliers and try to grab the middle cylinder part and pull, also to pull it out of the head, the casted pegs are just too hard to really work with like the regular ones, I think I'm gonna need to sand down the ball ends of it to make it "pop" in there...

Thats cool. I was wondering if anyone had casted something like that and how well it turned out. On a couple of the figures you can tell that they had to crack/break the neck/torso a little bit to get the peg out. I think I might work on those screw suggestions a little bit. Let me know how your casted pegs turn out!

I work a lot with jakks figs and I made a cast of the "barbell peg" but it would prob have to be sanded down to or have to be inserted in the cracked torso to really work cos the plastic for that stuff dries super hard.

Thanks for the reply fellas!
pock63 - I haven't tried the screw idea but I might give it a shot
MetalAlchemist - I guess I should have clarified but I don't have any pegs, so I will need to fabricate some somehow. The idea you suggested is also a possibility
I will definitely give both of these a shot and if you have anymore suggestions, send 'em my way! Thanks again

Well, if I am getting right "replacing" here, that means you got the spare joint to replace with. The only solution I would see, is cracking up the body, inserting the new peg and putting the whole thing together again with super glue and epoxy the seams.
If you don't have the replacement part, maybe building one from two cut up screws facing on oposite directions and covered with epoxy? (to make the barbell shape)
Note that I have not seen any jakks joint in my life, just giving ideas.

I've used a screw instead of a neck peg before. That works pretty well.