• 2023-10-24

Jig saw is a kind of electric saw that can cut according to the curve. In 1947, the German company Bosch invented the world's first jig saw. Jigsaw is an electric reciprocating saw that can cut curves on boards. Equipped with a jigsaw blade, it can perform straight and curved sawing on wood, metal, plastic, rubber, leather and other boards. It can also be equipped with a sharp blade to cut ru...

• 2023-11-30

Double insulation is an important safety feature implemented in many power tools and appliances. It consists of two layers of electrical insulation instead of one to prevent electric shock. The first layer is called basic insulation. It covers current-carrying parts and provides the primary protection against electric shock. The second layer is called supplementary insulation. It acts as a backup ...