Quote Originally Posted by Theo View Post
25mm i should say, though you're probably better off with Hardox
25mm HDPE=3mm Hardox. And that's not good enough either. Team RCC used 30mm HDPE on Obsidian, and that wasn't enough.

HDPE as armor is "consumable". It works, but will need frequent replacements. And you'll need a lot of air behind it.