2mm Thick Concrete is... strong and flexible?

Yeah, with fiberglass in it. Does anyone make alkaline resistant glass cloth? ...or is it just the loose fibers? Is there something better than burlap (jute)? Polypropelene mesh?   / jmemantzel   Oh, I also have paypal for anyone who wants to help more direct style. :-) https://paypal.me/jmemantzel Adventure BUilder T-Shirts: http://shop.spreadshirt.ca/1079802/