How do you determine what weight/type of interfacing to use when sewing?
Also why does the fusible interfacing seem to adhere at first, only to find once you have finished the garment you have bubbling, usually right in the front of the garment! Should they be dry ironed on or ironed with the steam on?
I did read somewhere that you are meant to pre shrink interfacings, is this correct even if the garment is only ever going to be dry cleaned?
If bubbling does appear, is there any way to get rid of it?
Thanks for looking, happy sewing!