Pi Day 21 Puzzle 13

Let's fold some paper!

Today's puzzle comes with a great debt of gratitude to origami designer David Mitchell, who graciously agreed to let me use his Windmill Flexagon design as the basis for this puzzle. The origami here is all his, and it is brilliant! Thank you thank you, Dave! 

You can check out more of his work-- including an incredible array of different paperfolding puzzles-- at OrigamiHeaven.com

If you're able to print and try the origami puzzle, then the PDF will have everything you need, including a link to the video instructions. But if you don't have access to a printer, never fear! I've included a bonus spreadsheet puzzle that you can solve instead. :)

P.S. this pattern-- and the rest of the stitch-a-long-- is completely free, so don't worry about Gumroad's price request! There is no need to donate, just hang out and enjoy the puzzles. :)