Sewing the Hair. 1  1. Thread your needle. Cut a piece of extension thread about 48 inches (121.9 cm) long and thread one end through the eye of a curved needle. 2  2. Secure the weft together. A single hair extension is also known as a weft. 3  3. Make the first stitch.
Climate & Weather Averages in Belfast, Northern Ireland, United Kingdom.
Sponsored Topics. Belfast is a city in Waldo County, Maine, in the United States. As of the 2010 census, the city population was 6,668. Located at the mouth of the Passagassawakeag River on Penobscot Bay, Belfast is the county seat of Waldo County.