A combine
Scissors have two sharp blades and when you put paper in between the blades and press down, the blades cut the thin piece of paper.
So they can cut things because blades are sharp.
There are several types of saw blades used for cutting wood, including rip-cut blades for cutting along the grain, crosscut blades for cutting across the grain, combination blades that can do both, and specialty blades for specific tasks like dado cuts or laminate cutting.
To prevent wood tear out when using power tools, you can use sharp blades and bits, cut against the grain, use a backing board, and adjust the cutting speed and depth.
The blades on hockey skates are only as sharp as the wearer has honed them. Professional ice skates (hockey skates included) are very sharp and are honed after every session. If there is contact, the blades can cut flesh. Guards are put on the blades immediately after coming off the ice. Blades that are dull are not as fast on the ice. Being cut with the blade of a hockey skate is not a primary concern of athletes.
Most sharp scissors will cut ribbon. Many people that find they cut ribbon often will have scissors that are only used for ribbon to avoid dulling the blades with other objects.
To prevent a stinging cut while working with sharp objects, wear cut-resistant gloves, use proper cutting techniques, keep blades sharp, and pay attention to what you are doing to avoid accidents.
Grasses are one example of plants with sharp leaf blades.
because the blades are really sharp and you can cut yourself or other people. it hurts, it's like a giant paper cut.
To stop doors, for one. Also, they are used to cut, all blades are simply very sharp wedges.
Veneer can be cut without chipping by using a sharp blade, cutting with the grain, and using masking tape to prevent splintering.