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A common sewing machine design uses a floating shuttle hook. The floating hook design allows a top thread loop to pass completely around the bobbin assembly. A lock stitch is formed when the top thread has looped completely around the bottom thread. The take-up lever ensure a tight stitch. Get on Patreon and help fund my 3D animation obsession! It wouldn't feel right to put sponsorship segments in the middle of high quality educational content, so let's try another way together: See more explanations of how things work at: License Animagraffs work for your own purposes I use Blender 3D to create these models. It's free and open source, and the community is amazing:
