What is the difference between a fusible and a non-fusible interfacing? A fusible interfacing/interlining is applied using heat. A interfacing/interlining without the special heat fusing adhesive is referred to as "sew-in" or non-fusible interfacing. Sew-in interfacing is not as popular as fusible interfacing because it requires more time to apply to the garment. It does not provide the same quality level as a fusible product. Funny.
I think it's important to note that 4Mica was quoting from the link that was posted. I have to admit, at first reading, I thought 4Mica himself
was advocating that fusibles are higher quality than non-fusibles...which I'm sure most forum members would have strong opinions about.