Billy_m24;4442994; said:Blue Max is tacky until fully curred which takes 15 days. They have some cool viedo of blue max on there web sit one of kids making a boat out of cardboard and bluemax and it worked.
So after it fully cures it's hard? Or is it still soft with a slight tack? What I'm getting at is if I get algae growing on it can you scrape it?