换小针和小孔针板,牙齿调低些,压脚压力调轻一些。换塑料压脚或滚轮压脚 |
送布牙要换小齿的,压脚应该用塑料压脚吧 |
薄厚料的缝制,线迹张力要综合考虑,尽量松一点,马牙调整为前高后低,压脚压力适度,操作工手法要配合一点。 |
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