Three of Ten

Technically this ran over into day four. I made a larger stuff sack for Keith's tent and needed to go buy the nylon so I couldn't get going right away. I also had trouble getting the pressure just right, maybe because of the heavy-duty thread or needle, not sure, but had to use my seam ripper a couple of times. Aggravating since it turned an easy project into a lengthier one. I also had to use math, gasp! to figure out the circular bottom. Truth be told I needed to Google how to find a diameter from a circumference. Does anyone besides Keith keep these formulas in their noodles for decades?