When you cut out the fabric for a tetraed, don't forget that the edge between to sides is 8/7 times the lengt of the zipper. Cut 2 times the length of the zipper as the long side, and 8/7 times the zipper length as the short side (2*zipper X 8/7*zipper) - otherwise the length of the side wont be the same. In the model I make, the zipper goes from the top down to a middle of the base on one side. It is actually very easy to make a tetraed, the trickiest part is to add the zipper, and if you want to do lining you need to do some abstract thinking.
Tuesday, September 16, 2008
Geometric sewing
When you cut out the fabric for a tetraed, don't forget that the edge between to sides is 8/7 times the lengt of the zipper. Cut 2 times the length of the zipper as the long side, and 8/7 times the zipper length as the short side (2*zipper X 8/7*zipper) - otherwise the length of the side wont be the same. In the model I make, the zipper goes from the top down to a middle of the base on one side. It is actually very easy to make a tetraed, the trickiest part is to add the zipper, and if you want to do lining you need to do some abstract thinking.
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