Originally Posted by
paulswalia
There's also a method where you sew two long strips (WOF) right sides togetheron BOTH long edges and cut triangles from this strip, one cut on one side, the next on the opposite side - this is really quick, but requires a special ruler, I think.
I have had the best luck with this method. It also results in bias on the edges, however. I starch the fabric or use Best Press on it.
You do not need a special ruler. Any ruler that is marked with a 45 degree line will do. For the first cut, put the 45 degree line along the top edge of the sewn strip, for the second cut put the 45 degree line along the bottom edge of the sewn strip. Then, just take out the stitches at the top of each triangle.