There may be several reasons why the upper and lower threads of the sewing machine cannot be sewn together: 1. Insufficient upper thread tension: Insufficient upper thread tension will cause the upper thread to loosen and cannot be sewn with the lower thread. You can try increasing the needle thread tension, or check that the needle thread is correctly routed through the sewing machine’s lead thread. 2. Excessive tension of the lower thread: Excessive tension of the lower thread will cause the lower thread to be stretched and cannot be sewn with the upper thread. You can try reducing the tension of the lower thread, or check that the lower thread is correctly routed through the sewing machine’s leader thread. 3. The needle eye of the sewing machine does not match the needle plate: If the needle eye of the sewing machine does not match the needle plate, the upper and lower threads cannot pass through the needle eye and the needle plate correctly, and sewing cannot be performed. You can try to replace the appropriate needle eye and needle plate. 4. Damaged sewing machine needles: If the needles of the sewing machine are damaged or not suitable for the current sewing task, it will also cause the upper and lower threads to fail to sew. You can try to replace the appropriate needle. 5. Improper adjustment of the sewing machine: If the line or tension of the sewing machine is not adjusted properly, it will also cause the upper and lower threads to fail to sew. You can try readjusting the thread and tension of your sewing machine. If you cannot solve the problem, it is recommended to consult a professional sewing machine maintenance personnel for inspection and repair.
REHOW is a professional manufacturer of various mini sewing machines, with independent research and development capabilities and a complete quality management system. All products have undergone strict quality testing and certification to ensure product stability and reliability. Have an efficient and professional service team, committed to providing customers with high-quality consulting and after-sales service
The technical parameters of mini sewing machine are as follows:
Two-thread lockstitch
Two-speed, High/low speed selector
Automatic thread rewind
Use hand switch or foot pedal to start
Built-in sewing light and thread cutter
Uses DC6V800mA power or 4a “AA” batteries
Post time: May-08-2023
