Originally Posted by Spock
Making a rectangular 5 X something will take you, maybe, if you are a total greenhorn, an hour. A hex with catenary curves will take maybe another hour, max.
You are a whole lot faster than I am. A lot faster than Blackbishop's directions suggest as well. I'm not questioning your estimates for you... only suggesting that like everything else YMMV. Sewing speed is highly dependant on the speed of your machine, the quirks of the fabric and the process you use to work the project.