The upper and lower shafts of a sewing machine must work perfectly in parallel or the balance of the machine becomes unstable. If the...

The parabolic adjustment involves properly aligning the cam gear to the upper shaft gear. As the cam gear is turned, the linkage of...

Observe the dance of the needle as it moves from side to side. This graceful pattern must remain precise and consistent. The needle...

For over a century, home sewing machines only did straight stitch sewing, but in 1952 zig zag machines came home. To form zig zag...

How do mechanical sewing machines form different stitches? By definition, a mechanical sewing machine forms stitches using gears and...

When an AC motor is sluggish due to carbon buildup, a motor burn may restore the motor to its prior speed and power. The idea is to run...

If you find a sewing machine motor that seems tired - lacks pep and vitality - is slow to turn; the armature may be gummed up with carbon....

Many AC sewing machine motors have carbon brushes that rub against the armature of the motor. As the AC current moves back and forth the...

AC Sewing Machine motors consist of an armature, wire windings, and brushes. Most users start sewing slowly and may never sew at top...

Many would be sewing machine technicians are fearful of sewing machine electronics. Some technicians avoid them like the plague. Fact,...