I'm new on this forum and I've been inspired by the MYOG posts. I tried to knock up a tarp tent and bivvy sack the other day. I used Jamie Short's lytw8t catenary tarp tent design as a guide, but made a few adjustments. Feedback and suggestions welcome. I am planning to test it out this weekend. Here are some more photos of how it turned out.

That looks fantastic, adding a cat cut isn't easy. I think a clip on front beak would be an ideal addition.

BTW those poles look like a really high quality addition to anyones tarp set up

Great work larsmars. I knocked up something simular last year however your bivi looks way better. What did the bivi weigh, when finished?
My attempt http://bearbonesbikepacking.co.uk/phpBB ... 845#p21845