I finally got around to using the atlas I bought a few weeks ago. I made this bunting and I love it! Here's how...
Use thick paper/cardstock to make your pattern. My triangle is 6" at the top with 8 1/2" sides.
Pick a good part of your map. Make sure the back is nice too.
Trace your pattern and cut out your traingle.
I always use a metal ruler upside down when cutting because then it will be flush with the paper.
Now you should have perfect triangles.
Use bias tape for the top. All I had was single fold 1/2" so I had to attach it to the front and the back of the triangles. Next time I'll buy 1" so I can just fold it over. I used double-sided tape to secure it.
It's time to sew! I used a zig-zag stitch.
It should look like this...
I left about 3" of bias tape at each end. I sewed to the end of the paper, did not sew the 3", and put a few stitches at the very end. This way the bias tape forms a loop for hanging the bunting.