a while ago out of boredom I made a piece of the reach base armor out of EVA (forearm)
so my question is: to fill the spaces, what material can I use to fill the gapes?
I didn't check out what kind he had in the link, but I use silicone caulking stuff because it will stretch and bend with the foam. I just squeeze some onto my finger and spread it along the seams, wiping away the excess