Can I use iron filings when cutting?
The clamping of the workpiece must be firm and must not be dithered, so that the saw blade is broken when the workpiece is moved during sawing. At the same time, it is also necessary to prevent the deformed surface and workpiece from being deformed.The workpiece shall be clamped to the left of the vise to facilitate operation; the saw line shall be perpendicular to the jaw so as to prevent sawing; the sawing line shall not be too far away from the jaw so as to prevent vibration during sawing.
1. before cutting, check the direction and tightness of the saw blade;2. sawing pressure should not be too large, the speed should not be too fast, so as not to break the saw blade wounding;3. when sawing will be completed, the force must not be too large, and the left hand must be used to hold the sawed part so as not to drop the foot when it falls.
Cut round steel, in order to obtain neat kerf, we should start with a direction of play saw saw to end. If the requirement of the section is not high, the direction of sawing can be changed gradually to reduce the resistance and facilitate cutting in.When sawing a round tube, the tube is held horizontally in the vise, and the thin tube or the finished tube shall be clamped between the wood pads. Cut tube not from one direction saw the end, should stop to saw the inner wall of the tube, then the tube to push the sawing direction of rotation, still according to the original one saw it, so continue to turn according to, to cut off so far.When sawing thin plate, in order to prevent the workpiece from vibration and deformation, the board can be clamped on both sides of the plate for sawing.
Sawing, hand saw bow, to stretch the natural, the right hand holding the handle to the front of the pressure, the left hand light in front of the bow frame, a little pressure. The weight of the human body is evenly spread over the legs. Sawing speed should not be too fast, to 30~60 times per minute is appropriate, and the use of saw blade of 2/3 of the work, so as to avoid the middle part of the blade quickly blunt.There are two kinds of push saw saw bow movement: a linear movement, suitable for cutting the bottom surface of the groove and the requirements of Straight Thin-walled Workpiece sawing; another bow swing up and down, so naturally, hands are not easy to fatigue.When sawing the material, it should be light to prevent it from damaging the arm or breaking the saw blade.
There are two kinds of sawing methods: the far side, the saw and the near side, and the saw. Because at this point, the sawtooth is gradually cut into the material, it is not easy to jam, so it is convenient to saw. The angle of saw should be about 15 degrees. In order to see the position of the saw is correct and steady, the left thumb can be used to stop the saw blade. When sawing, the pressure should be small, the trip should be short and the speed should be slow, so that the saw can be stable.
