Use 3D printing to make a device that folds 1-inch, 1.5-inch, or 2-inch fabric (bias tape) into strings for protective masks. Fabric ties are durable in the washing machine, and eliminate the need to source other materials that can be difficult to find. This device does not require ironing. The folded tape is fed directly into a sewing machine. This makes the creation of tie strings for protective masks extremely fast and easy. The two sections fit together to make a single device so both folds can be done at once (see photo).
DOWNLOAD: Thingiverse Page / Project Files.
DOWNLOAD: Thingiverse version with notches for pins.