Needle Hitting the Bobbin Case: Find the Contact Point
A metallic tick under the plate is not random noise. It comes from one of six places where the needle can touch metal, and each one leaves its own clue…
needle strike
Needle Bar Height: The Adjustment Behind Mystery Skips
When a machine skips stitches despite a fresh needle and correct timing, the needle bar itself may be sitting too high in its clamp. Here is the spec, the handwheel…