I just got me a mystery helmet and i am not sure what to use to keep it together. If I should use glue, bondo, or some kinda of screw and bolts system. can anyone help me out?
I also want to know this.
That depends on what you are doing.
Most the time I use bondo but for the visor and some other parts I'll use superglue or Amazing Goop(best glue ever).