Big bag sewing machine

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  • 2. Insert the Twin Needle Insert the twin needle into the needle holder, ensuring that the flat side of the needle is facing the back of the machine. Tighten the needle securely to prevent it from loosening during sewing.


  • 4. Cost-Effectiveness While the initial investment in a double stitch machine may be higher than standard sewing machines, the long-term savings through increased efficiency, reduced fabric waste, and lower return rates can make it a more cost-effective choice.


  • What is Lock Stitch?


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