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A bobbin is a small spool, usually made of plastic or metal, that holds the lower thread in a sewing machine. It works together with the top thread to form each stitch.
Make sure to use the proper kind of bobbin for your machine or tool.
The Patagonia® Expedition Sewing Awl uses a Class 15 bobbin to hold thread.
Follow this guide to add new thread to a bobbin using a sewing machine or a bobbin winder.
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            You'll need: 
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            A sewing machine or bobbin winder 
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            An empty bobbin (compatible with your machine or tool) 
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            A spool of thread 
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            Your sewing machine or bobbin winder manual (optional, but helpful, especially for first-timers!) 
 
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            Place the bobbin onto the bobbin winder pin. 
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            Place the spool of thread onto the spool pin. 
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            Secure the spool with a cap if your machine uses one. 
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            Guide the thread through the thread path and tension discs, following your machine's manual. 
 
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            Attach the thread to the bobbin: 
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            If the bobbin has a hole, thread the end through it from the inside out. 
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            If the bobbin doesn't have a hole, wrap the thread around the bobbin manually a few times in the direction it will spin. 
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            Turn on the machine if it's not already on. 
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            Engage the bobbin winder by pushing the bobbin pin to the right or pressing a knob, depending on your machine. 
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            Hold the thread tail for the first few seconds, then let go once it’s secure. 
 
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            The bobbin will spin and fill with thread. 
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            Cut the thread and remove the bobbin. 
 
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            Uniform distribution: The thread should be wound in smooth, uniform layers across the entire bobbin. There are no peaks, dips, or bunching in the middle or at the edges. 
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            Firm tension: The thread should be tight and compact. Each layer lies flat and smooth without loops or tangles. 
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            Proper fill level: When full, the thread shouldn't extend past the rim of the bobbin. 
 
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            Loosely wound: A messy bobbin leads to messy sewing. The bobbin must be wound tightly and with consistent tension to function properly—this applies whether you're using a sewing machine or an Expedition Sewing Awl. Unwind the bobbin, re-thread the machine, and try again. Make sure the thread passes through all tension guides. 
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            Not winding: Make sure the machine is in bobbin mode. This may involve flipping a switch or pressing a knob. On some machines, the foot pedal must be pressed to activate the winder. 
 
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