I recently discovered how much happier I am (and how much less fatigued and hungry I am) when I BP with very little weight. Now Im kinda obsessed...

Anyways, I am wondering about the specifics on how to make the ray-way gravity water filter. I use the heavy Katadyn Combi (best tasting water in the world!), but would love to try something new. Can anyone send me in the right direction? If i understand it correctly, you can hike as it filters...?

PS Please no more discussion about "filter vs. chem," "Why even filter at all," "is that a filter in yer pocket, or are U just glad to see me?" etc.
If a robot could carry my stuff, I'd make him carry me with my Osprey on my back any way.