The woodworking handsaw, said to have been invented by Luban, was inspired by the jagged-edged green leaves that cut fingers. Woodworking hand saws can be purchased and used directly, or you can make them yourself. When it comes down to it, how many types of woodworking hand saws are there? How to use a woodworking hand saw? Next, I will answer your questions for you.
1. Various woodworking hand saws
1. Narrow hand saw, the saw blade is narrow and long, the front end is pointed, and the length is about 300mm-400mm. Hand saws are used to cut small holes.
2. Panel saw, also known as hand saw. It consists of a saw blade and a handle. The length of the saw blade is about 250mm-750mm, and the tooth pitch is 3mm-4mm. The panel saw is used for sawing wider boards.
3. A wire saw, also known as a hack saw, is made of bamboo pieces that are bent into a bow shape and stretched with steel wires at both ends. On the steel wire, serrated fly edges are chopped, and the sharp edges of the fly edges are used for sawing. The length of the wire is 200mm-600mm, and the length of the saw bow is about 800mm-900mm. Wire saws are used for sawing complex curves and openings.
4. Knife saw, the knife saw is composed of two parts, the saw blade and the saw handle.
5. The frame saw, also known as the frame saw, is composed of twisted ropes and strands, I-shaped wooden frames, saw blades, etc. Both 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 twisted, the saw blade is taut and ready to use.
6. The jig saw, also known as the winding saw, has the same structure as the frame saw, but the saw blade is relatively narrow (about 10mm), mainly used for sawing arcs, curves and other parts.
7. The slot saw is composed of a saw blade and a handle, and the length of the saw is about 200mm. Slot saws are mainly used for grooving wood.
2. How to use a woodworking hand saw
1. Posture, the standing position and body swinging posture during sawing are basically similar to filing, and the swing should be natural.
2. Pressure, during the sawing movement, the thrust and pressure are controlled by the right hand, and the left hand mainly uses the right hand to straighten the saw bow and the pressure should not be too large. When the hand saw is pushed out, pressure is applied to the cutting stroke, and the return stroke does not cut and does not add pressure to pull back naturally. The workpiece will break with less pressure.
3. Grip method, hold the handle of the saw fully with the right hand, and lightly support the front of the saw bow with the left hand.
4. Movement and speed, the sawing movement generally adopts a small up and down swinging movement. That is, when the hand saw is advanced, the body leans forward slightly, and when the hands are pressed toward the hand saw, the left hand is upturned and the right hand is pressed down; when returning, the right hand is raised and the left hand naturally follows. For straight sawing that requires the bottom surface of the saw seam, linear motion must be used. The speed of sawing movement is generally about 44 times/min. It is slower to saw hard materials and faster to saw soft materials. At the same time, the sawing stroke should be kept uniform, and the speed of the return stroke should be relatively faster.
Three, woodworking hand saw precautions
1. The saw blade should be installed properly. Do not use excessive force suddenly when sawing to prevent the saw blade from breaking the saw during work.
The bow burst out and hurt people.
2. When the workpiece is about to be sawed off, the pressure should be small, to avoid the sudden disconnection of the workpiece due to excessive pressure, causing the hand to rush forward.
Accident, generally when the workpiece will be sawed off, you should use your left hand to hold the broken part of the workpiece to avoid falling and hurting your legs.
Although the woodworking hand saw looks simple, it is a sharp tool after all. Therefore, we must be careful when using woodworking hand saws, pay attention to safety issues, and prevent ourselves from cutting ourselves.