Stitch adjustments 39
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• Type and thickness of the fabric
• Needle size
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2-thread overlock
When the lower looper thread lies on the underside of
the fabric
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When the needle thread tension is too loose ,QFUHDVHWKHQHHGOHWKUHDGWHQVLRQEOXHRUJUHHQRU
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2-thread overlock, wrap
When the lower looper thread tension is too tight or
needle thread tension is too loose
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When the lower looper thread tension is too loose ,QFUHDVHWKHORZHUORRSHUWKUHDGWHQVLRQ\HOORZ
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When the lower looper thread tension is too loose ,QFUHDVHWKHORZHUORRSHUWKUHDGWHQVLRQ\HOORZRU
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When the upper looper thread tension is too loose ,QFUHDVHWKHXSSHUORRSHUWKUHDGWHQVLRQUHGRU
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When the needle thread tension is too loose ,QFUHDVHWKHQHHGOHWKUHDGWHQVLRQEOXHRUJUHHQRU
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3-thread overlock
When the upper looper thread lies on the underside of
the fabric
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When the lower looper thread appears on the top of the
fabric
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GHFUHDVHWKHXSSHUORRSHUWKUHDGWHQVLRQUHG
When the needle thread is too loose ,QFUHDVHWKHQHHGOHWHQVLRQEOXHRUJUHHQ
4-thread overlock
When the upper looper thread lies on the underside of
the fabric
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GHFUHDVHWKHORZHUORRSHUWKUHDGWHQVLRQ\HOORZ
When the lower looper thread appears on the top of the
fabric
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GHFUHDVHWKHXSSHUORRSHUWKUHDGWHQVLRQUHG
When the left needle thread tension is too loose ,QFUHDVHWKHQHHGOHWKUHDGWHQVLRQEOXH
When the right needle thread tension is too loose ,QFUHDVHWKHULJKWQHHGOHWKUHDGWHQVLRQJUHHQ
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When the lower looper thread tension is too loose ,QFUHDVHWKHORZHUORRSHUWKUHDGWHQVLRQ\HOORZ
When the upper looper thread lies on the underside of
the fabric
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GHFUHDVHWKHORZHUORRSHUWKUHDGWHQVLRQ\HOORZ
When the lower looper thread appears on the top of the
fabric
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GHFUHDVHWKHXSSHUORRSHUWKUHDGWHQVLRQUHG
When the right needle thread tension is too loose ,QFUHDVHWKHQHHGOHWKUHDGWHQVLRQJUHHQ
When the chainstitch needle thread tension is too loose ,QFUHDVHWKHFKDLQVWLWFKQHHGOHWKUHDGWHQVLRQEOXHRU
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