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Step 7Completion, sewing it all together
To keep everything in place we need to cut a strip of stretch fabric that is as long as the circumference of the circle plus 1.5 cm seam allowance, and as wide as all the layers together (in my case 4.8cm) plus 1.5cm seam allowance. I'm writing this down, because it is possible to make the circle bigger and the buffering material thicker or thinner. You'll just have to do this calculation:
CIRCUMFERENCE = 2 * RADIUS * PI
RADIUS = 11 cm
PI = 3.14159
CIRCUMFERENCE = 34,6 cm
--> 36 x 6 cm for side strip
Start by sewing both of the shorter ends of the strip together. Then attach one edge to the INPUTS circle of neoprene and the other edge to the TOP circle of neoprene (as seen in photos).
CIRCUMFERENCE = 2 * RADIUS * PI
RADIUS = 11 cm
PI = 3.14159
CIRCUMFERENCE = 34,6 cm
--> 36 x 6 cm for side strip
Start by sewing both of the shorter ends of the strip together. Then attach one edge to the INPUTS circle of neoprene and the other edge to the TOP circle of neoprene (as seen in photos).
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