need help making action figure from scratch

Posted in Custom Workstation

hello, I'm making an action figure for class and I need some help. I'm using cardboard and hot glue to make it, but I also have a couple of other materials. I just finished the arms and I think they're pretty good but I do have some problems already:

-the biggest problem is the pins. for the arms, I made double pin joints but I used actual pins, so they work pretty badly. They are super small and thin so they constantly slip and fall out, and the joints are super loose and don't stay in place. i have some thick metal wire I could use but it also just ends up being way too lose and slipping out of the holes. i had this idea where I add a extremely thin super glue layer over them so they fit tighter but I haven't tried it yet.

-ball joints are pretty hard to make out of cardboard because its so blocky, so I had an idea of forming the ball joints out of aluminum and using more aluminum to wrap it around so it can move. only problem is that aluminum is pretty light so if I were to use it for lets say a shoulder part, it wouldn't be able to hold up them arm, so if anyone has any ideas for this as well lmk

here is the arms so far

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