What processing can a hand saw be used for?

1, narrow hand saw, the saw blade is narrow and long, the front end is pointed, and the length is about 300 mm-400 mm The narrow hand saw is used to cut narrow holes and slots.

2, board saw, also known as hand saw. It consists of a saw blade and a handle. The length of the saw blade is about 250 mm-750 mm, and the pitch of teeth is 3 mm-4 mm The plate saw is used to saw wide plates.

3. Wire saw, also called bow saw, is made of bamboo pieces bent into an arch and steel wires stretched at both ends. The steel wire was cut by the sharp blade of the flash and saw a serrated flash. The steel wire is 200-600 mm long, and the saw bow is about 800-900 mm long. Wire saws are used to cut complex curves and holes.

4. Knife saw. Knife saw consists of two parts: saw blade and saw handle, which are divided into back-clip knife saw, single-sided saw and double-sided saw.

5. Frame saw, also called frame saw, consists of twisted rope and twisted blade, I-shaped wooden frame, saw blade, etc. The two ends of the saw blade are fixed on the frame with knobs, which can be used to adjust the angle of the saw blade. After the rope is tightened, the saw blade is tightened and can be used.

6. A jigsaw, also called a jigsaw, has the same structure as a frame saw, but the saw blade is relatively narrow (about 10mm), and is mainly used for sawing arcs, curves and other parts.

7. Slot saw, consisting of a saw blade and a handle. The saw blade is about 200 mm long. Slot saws are mainly used for sawing wood.

Second, how to use the woodworking hand saw?

1, when sawing, the posture, standing posture and body swing posture are basically similar to those of a file, and the swing should be natural.

2. Pressure, sawing movement, thrust and pressure are controlled by the right hand, and the left hand mainly cooperates with the right hand to correct the pressure of the saw bow. The hand saw exerts pressure on the cutting stroke when it is pushed out, and naturally pulls back when it is retracted, without cutting or pressurizing. When the workpiece is about to break, the pressure should be small.

3. Holding method: fully hold the saw handle with the right hand and gently hold the front end of the saw bow with the left hand.

4. Motion and speed. Generally, the sawing motion adopts a small amplitude of up-and-down swinging motion. That is, when the hand saw is pushed forward, the body leans forward slightly, while both hands are against the hand saw, the left hand is tilted upward and the right hand is pressed downward; On the return trip, the right hand is raised and the left hand naturally follows. The bottom surface of the saw seam requires that the straight saw must move in a straight line. Generally, the sawing speed is about 44 times/minute, the sawing of hard materials is slow, and the sawing of soft materials is fast. At the same time, the sawing stroke should be uniform and the return speed should be relatively fast.

5. Sawing and sawing: Sawing can cut wood into various shapes or reach the required size of wood components. The purpose of sawing is to saw wood vertically or horizontally. When sawing with a saw, it is a working process that the saw blade cuts wood quickly in a straight line or curve with gentle pressure and propulsion. Saws cut wood in this process, and because of the continuous action of saw teeth, wood also produces great friction or extrusion force on the saw teeth. Therefore, the saw blade must have the strength of resisting extrusion pressure, certain plasticity and heat resistance, so that the tooth edge of the saw blade will not become dull.

Third, the choice of saw blade

When choosing a saw blade, you must choose a saw blade with good rigidity and toughness, so that the saw blade is easy to file and durable. Hand-made saw blades are generally made of carbon tool steel with good rigidity and heat treatment. Mechanical circular saw blade adopts alloy tool steel, which can meet the working characteristics of circular saw blade; Band saw blade is made of Cr-W-Mn alloy steel with moderate hardness. Therefore, the choice of saw blade also needs to really understand the advantages and disadvantages of saw blade in practice.