Pertex Quantum / Cuben Fiber Bivy – New Black Bivy
I needed to make another Pertex Quantum / Cuben Fiber Bivy. I discovered that when you go several years between making the same thing you can forget a lot of how you did it.
I made my first Pertex Quantum / Cuben Fiber Bivy back in Sept. 2006. When I went to look for my old pattern I discovered I had recycled it into something else. OK, just make a new one. After cutting the material I realized that I could not remember how I had made the hood and how I had closed off the foot end. It took three tries practicing on some of my $1 a yard WalMart stuff to figured it out.
The new Bivy has a few extra features on it such as loops at each corner and a loop in the center of the hood.
The Black Pertex Quantum / Cuben Fiber Bivy weighs 3.128 ounces. The loops count for 0.176 of an ounce and put the Bivy just over the 3 ounce mark.
The first Bivy I make weighs 2.82 ounces but that is without the extra 5 loops like I put on the Black Bivy.
1. Cut the Pertex Quantum material. I use a hot knife for the PQ.

2. Trying to remember how I made the hood.

3. Getting ready to cut the Cuben Fiber. I am using some of the 0.33 ounce per square yard Cuben Fiber. I use a #11 blade in an X-acto knife to cut my Cuben Fiber.

4. Everything cut and ready to start sewing. I sew all my Cuben Fiber.

5. Black Bivy finished. You can see three of the loops I put on this Bivy. The other two loops are at the foot end. Total weight is 3.128 ounces or 88.7 grams.

6. My two Pertex Quantum and Cuben Bivys.
