Needle thread is loose.
Fabric puckers
Upperlooper thread is tight.
Lowerlooper thread is loose.
Upperlooper thread is loose.
Lowerlooper thread is tight.
Upperlooper thread is loose.
Lowerlooper thread is loose.
One-needle (Three-thread)
A Reverse 反面
B Surface 正面
C Needle thread 针线
D Upperlooper thread 上弯针线
E Lowerlooper thread 下弯针线
针线太松。
布料褶皱
上弯针线太紧。
下弯针线太松。
上弯针线太松。
下弯针线太紧。
上弯针线太松。
下弯针线太松。
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