It is used:
- to give strength - buttonholes, waist bands, etc
- for shape retention - pockets, buttonholes, collars, etc
- to add body
The choice of interfacing needs great care. the wrong choice can mar the finish and appearance of a garment.
Types of Interfacing
- Woven - lawn, horse hair canvas
- Non-woven - Vilene
- Fusible, non-woven - Vilene
- Fusible, woven - solid fusible canvas, lawn, armoweft, whisperweft
Interfacings come in different weights ad degrees of stiffness and some like lawn are not stiff at all. Fusible interfacings must be used with great care since all fabrics will not react favourably to them.
Fusing is the act of bonding a fusible interfacing to a garment by the action of heat and pressure.
Fusible interfacing has been treated so that it adheres to other fabrics by the application of heat and pressure. It is identifiable by the glue on one side.
To fuse the interfacing to fabric:
- Pre-heat the iron, set on 'cotton'
- No steam
- Fabric right side down
- Interfacing sticky side down
- Apply heat and pressure for 10 seconds
- Check that fusing is complete - if not reapply heat and pressure
Note: Some interfacings such as whisperweft adhere better with a damp cloth on top, or steam. Calico placed under and over the pieces will protect your iron and board from excess glue.