What thread type do you recommend us to use when experiencing colour migration from upper material to sewing thread on contrast stitching? We realise that we have an issue with fastness of upper material.

We recommend the use of Super Lubricated products in conjunction with titanium nitride needle to minimise needle overheat.

What is fabric flagging, what are the causes and how can it be resolved?

What causes hairiness in threads?

Check working condition and parts of sewing machines (i.e. hook, bobbin case, throat plate, needle tip, sharp thread guide) plus thread quality and material thickness.