Sewing Recitation Links
http://www.singerco.com/sewing-resources/stitch-reference
http://thefinestthread.com/different-types-of-sewing-machines-explained/
http://download.brother.com/welcome/doch000588/885-u01_u04_om03en.pdf
https://i.imgur.com/SaNHcqm.gif
http://fab.cba.mit.edu/classes/863.12/people/calisch/inflate/inflate.html
