Shears that are made using a forging technique, are made with two different pieces. The blades are made separately from the handle. Then the handle is welded to the blades.
The handles and blades can be made from different quality of steel.
A compression force is used to make and shape the blades. This method forces the molecules together. This produces a longer lasting edge on the shears.
Casted shears are made from pouring liquid metal into a mold. They are then allowed to cool and harden without any pressure. Without the compression pressure as used in forged shears, the molecules in casted shears are spread apart as the metal expands as it cools.
The spreading of the molecules may produce a brittle blade that may chip easily.
Sometimes, it is impossible to tell the difference between forged and casted shears. And both can produce low quality shears that won’t hold an edge for a long period of time or chip easily.
Both methods can produce a shear that holds an edge and resist chips.
The best way to safeguard your investment is to buy from a reputable company. Because you won’t know exactly what method your shears have been made, buying form a reputable company or manufacturer, with a good reputation will ensure that you are purchasing a high-quality shear, regardless of the method.
Again, inexpensive shears with big promises, go hand in hand with the phrase of “You get what you pay for.” That being said, companies will often over price their scissors, depending on the price point to fool customers into thinking they are purchasing a high-quality shear.
Reputable companies care about quality and stand behind the consistent quality of their shears. And just as their shears that can hold an edge for long periods of time between sharpening’s, reputable companies can hold their edge against companies that produce low quality products.