Pie Shaped Yarn Cutter Keychain
thingiverse
A keychain yarn cutter in the shape of a pie! I made these as swag for a Pi Day knitting retreat. They're designed to work with a 28mm rotary cutter blade, available at any quilting or craft store. To assemble place the blade on the post of the bottom piece, add some glue to the hole on the top, and snap the pieces together aligning the yarn notch as you do.
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