Wings THE HOME-MADE STOVE ARCHIVES |
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wings |
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Editor's note: An UC Berkeley e-mailed project suggests how to add another functionality to your stuff sack. |
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by Joel Hollingsworth
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A little more weight, but no annoying blowing. Note: Use duct tape wrapped around the skewers to join them into a square with a little slack (1/16") at the corners. Also, you may want to run some elastic from one corner of the ziplock, up over the center of the bottom seam, and back to the other corner so the fabric doesn't baloon out when you squeeze.
I attach some cheesy Paintbrush drawings of the bellows, and further reflection has suggested some design improvements. First, seam sealing is probably extra weight. Second, I've realized that it needs something to hold the skewers in place, so I've designed accordingly.
Here's a key for the drawings: Top, far left: My inspiration, the Wendy's sour cream carton. Top, left of center: skewer taping diagram. Top, right of center: Use #1: A Stuff Sack. Top, far right: Use #2: A Bellows. Bottom: Cutting & Seam Pattern
You need: a piece of silnylon four times as big as you would need to cover your disassembled stove, plus seam allowences on all sides; thread; a drawstring; a ziplock bag; bamboo skewers; duct tape; aquarium cement; a check valve; aquarium tubing of the same size; a couple inches of copper tubing.
Solid lines of these colors are cut edges. The black dashed lines are seams, the gray curve is where the drawstring will go, and the yellow lines are the fold lines for "stuff sack mode."
You should mentally unfold this pattern, and physically unfold the cloth. It's not to scale; obviously, the diagonal dashed lines should all be the same length, but it was funner to shade than to fix that detail.
Repeat twice, so all the skewer pieces are in a line. Fold the ends of this line in to the center, and thread this into one of the small holes for the drawstring, and work it around until it follows the diagonal seams.
Poke the two free ends of the skewer out of the drawstring holes, and join them like all of the other ends. Now sew the final seam, sealing in the skewers. Thread the drawstring through, and you''ve got a working struff sack.
Find a ziplock-type closure of the right length, and glue it on so that itdoesn't interfere with the drawstring, being careful not to let it leak at the corners (You might want to leave an inch or more of bag on, gluing only the edges, but make sure that the ends of the skewers will butt up to the inside of the closure while you're using the bellows).
UC Berkeley |
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The Author's Website: N. A. |
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