I'm trying to weave my own canvas to paint on. So I need the fabric to be dense and stiff. I'd like to do a linen and cotton version. So far I've been using 8/2 cotton and tried samples of epi of 24, 27, and 30. All aren't dense enough. I've been beating the fabric hard which helped and finished the piece off with hot water and iron. I'm also using plain weave. Please let me know if you have any suggestions!