Feeding and Needle-bar structure adopt advanced step closed-loop motor with 0.05mm, to ensure the stitch more accurate and beautiful.
By setting the first 5 stitches speed from operation panel directly, the machine can start with low speed, and prevent the thread broken which often happen when high-speed starting.
The electronic device can control the bar-tacking of last several stitches, and prevent buttonhole thread loosing.
Driven by closed-loop motor , the cutter can work high speed, low noise, and open the hole one-time no need to change the cutter however long it is.
