Tinsnips & Shears
When using tinsnips or shears it is important to ensure that the cutting pressure is applied as a straight pressure (up or down) and that the user does not twist or wrench the blades.
Blades are hardened in order to provide sharp and long lasting cutting edges. This process tends to make them brittle and twisting can have the effect of chipping or breaking them.
Another name for compound action hand snips, so named because of their original use in the aviation industry.
This provides additional power through the use of a double fulcrum.
Similar to a pair of scissors. They can be opened and closed by hand.
Incorporating a spring so that the blades will open of their own accord.