How Stitches Form
Thread is drawn from the top of the machine down through the material and needle plate by a needle. The needle reaches its lowest...
Timing
When a sewing machine forms stitches, it may be described as being in time. When stitches fail to form or skip, the machine is said to...
Set Stop Positions
Oscillating hooks move back and forth from their start/stop positions. With the needle at its lowest position, the point of the hook...
Rotary Hook
Rotary hook rotates twice for each stitch. As the needle moves to its lowest position and rises to "loop lift" (the point where the...
