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A dozen Sewable Disc Buttons to fab at once for better pricing on "Strong and Flexible" material options' base start-up cost.
Note: I have not test-printed this. I'm waiting until I have other parts ready to get past $25 minimum.
I have printed older sewable disc button designs successfully, but be aware that the little holes will likely be clogged with unfused binder. They are easy to clean with a needle; I haven't tried flushing out the holes with water or washing them yet.