1		Who invented the sewing machine for the first time?

	1) Chals Weisenthal, a German, made the first sewing machine in 1755, which used a needle having the needle hole. Following that, in 1790, English T. Saint made a trial of automation and in 1825 Simon of France got a patent on it. In 1790, a sewing machine was introduced into Korea, and the industrial sewing machine was used in the early 1960’s

	2		When sewing, how are a thread and needle selected?

	1) It is very important to select a thread and needle matching with the fabric before starting sewing. If the needle and thread is too thin compared to the fabric, the fabric wrinkles or the thread is easily snapped. Please select the color of the thread mostly close to the fabric. * Thread selection In general, the kinds of sewing thread is classified into cotton, polyester and silk threads. Select the one fitting into the color and material. * Needle selection The needle for hand sewing is separated in accord with the thickness of the fabric. The hand-sewing needle is thicker as the number is smaller, but the sewing machine needle is thicker as it is larger. Sine there are two types of the sewing machine needle, home and industrial, be cautious in selecting it.

	3		Why is the sewing machine called ‘mising’?

	1) The sewing device is called the sewing machine in English. It is thought that the Japanese-style pronunciation of a machine is ‘mising’, and that’s why it is called ‘mising’

	4		What stands for lightweight, medium weight and heavyweight?

	1) In general, the lightweight, medium weight and heavyweight in sewing mean the thin, medium, and thick fabric respectively. For instance, the blouse, knit, Korean-traditional fabrics are lightweight. The men’s suit, lady dress, Y-shirt fabrics are medium weight and the fabric for bags, jeans, clothes for cold weather is heavyweight.

	5		What are the differences between the model KM-235 and KM-250?

	1) Both models have the similar structure expect for the thread trimming system. The thread trimming system of the KM-235 model is a gear structure, and the KM-250 model has a cam-structured thread trimming system.