Howdo,
Not wanting to spend a small fortune for one of these, decided to look about to find if anyone had made their own, and what with..
I was intending to use haulage tarp canvas, after a talk with another member, but was let down by another friend who said they had some spare, so I hunted the net and bought a 2000mm x 400mm roll of artist canvas from the famous auction site for a few pound.
Washed it, and it has shrunk, but expected it, so now on the line drying, ready for turning into a filter...
I know it will still need a boilup before using, but it means I can collect water while on the roam without having to carry x ammount of water in my pack.
Just hope now I don't make a mess with the sewing machine!.