1, first cut the cardboard (cardboard of home appliance packaging box) into the size and shape of the original sweater, and it is best to polish the incision with sandpaper to avoid hooking the sweater.

2. Put the cardboard into the clothes.

3. Draw the corners, neckline and cuffs to the size of cardboard, and then fix the clothes with clips, so that cardboard can stretch the clothes and help shape them.

4. It can be heated by steam iron. Because the heating area of steam iron is limited, in order to ensure the uniform stretching of fibers, the method of local, segmented, divided and heated stretching is adopted for sweaters.