The behind-the-scenes tales of hit products and creations from Japan: this is Japan's Top Inventions. This time, a product used and loved in garment factories worldwide: automatic thread trimming sewing machines. Just press a foot pedal, and the threads attached to stitched pieces of cloth are automatically cut. From high-end brands to fast fashion, these machines are used by garment makers around the world. This time, we dive into the little-known story behind their invention.