I posted about making some leather gaskets recently
This worked well enough to be tolerable for some uses, but it still leaked making it annoying for others.
Since them I picked up a new water bottle that I thought would be a lot easier to seal using this type of gasket, a 40oz Kleen Kanteen narrow mouth (and metal cap). So I made a new gasket for it:
I used the same technique as my last gasket, where I cut it much smaller than the actual lid. Then I soaked the gasket in water and stretched it until it fit on to the lid. That done I let it dry most of the way while on the lid.
Just using this technique, it still leaked, so I decided to try something else. I repeated the above process, but with a thicker leather, then I made up a fairly strong mixture of wax in turpentine much like I use for treating canvas http://www.blog.smalladventures.net/2017/08/howto-waxing-cotton-2.html . I soaked the gasket in this mixture for a while.
The turpentine smell hasn't fully dissipated, but the end result is good enough I can carry the bottle in a waterproof backpack and find no water in the backpack afterwards, or leave it sitting on it's side on the truck platform next to me while I'm sleeping. I won't argue turpentine is great for you, but it should evaporate and thus not be a problem.
Alright! I finally have a GOOD waterbottle. So, the next step is to figure out how to carry this on my backpack. I've been carrying a bottle on a string slung over my shoulder, and this gets really annoying, especially on rough trails. So, here's what I came up with.
The fabric is from a torn American WWII military tent I picked up... it's a 6 ounce cotton canvas. I sewed a strip of leather in to the top hem to give the lip some stiffness so the waterbottle would slide in easer. Then I sewed a patch of leather to this, with slits cut in it. The stitches across the top were done with a speedy-stitcher, but it was breaking the threads on the canvas, so I switched to using a hand-awl to punch holes and then stitching with a needle and thread for the rest of the patch.
I used the patch to tie the holder to my pack frame. I can push up on the bottom of the bottle, gathering the fabric in my hand to slide the bottle out.
And with a little finagling I can slip it back in by pulling the fabric out just a bit first.
End result: I FINALLY have a way to comfortably carry water comfortably while backpacking without soaking my leg or using any synethetics! Woot!