When using a saw blade, you will find that not only the size of the saw blade, but also the number of teeth of the same size saw blade, why is it designed like this, how much or less is better?
In fact, the number of sawtooth is related to whether the wood you want to cut is cross-cut or longitudinal. The so-called longitudinal cut is to cut along the direction of the wood grain, and the cross-cut is to cut at 90 degrees to the direction of the wood grain.
We can do an experiment and use a knife to cut wood. You will find that most of the cross-cuts are particles, while the longitudinal cuts are strips. The wood is essentially fibrous. This result is also reasonable.
For multi-tooth saw blades, at the same time, you can imagine the situation of cutting with multiple knives. The cutting is smoother. After cutting, observe the dense tooth marks on the cutting surface, the flatness of the saw edge is high, and the speed is fast and easy to paste the saw (that is, the hair on the sawtooth is Black), sawdust excretion slower than those with fewer teeth. It is suitable for scenes with high cutting requirements, and the cutting speed is appropriately slowed down, which is suitable for cross-cutting.
There are few sawtooths, and the sawed surface is relatively rough, the spacing between the tooth marks is large, and the sawdust removal speed is fast, which is suitable for rough processing of cork, and the sawing speed is fast. Slitting has advantages.
If you use a multi-tooth cross-cutting saw blade to cut longitudinally, because the number of teeth is easy to cause poor chip removal, and the speed is fast, it may cause the saw and clip saw.
Hazards can easily arise when saw clipping occurs.
For artificial boards such as plywood and MDF, the direction of the wood grain has been artificially changed after processing, and the characteristics of forward and reverse cutting are lost. For cutting, use a multi-tooth saw blade, slow down the speed and move smoothly, and use a saw blade with a small number of teeth, the effect will be much worse .
If the wood grain is cut obliquely, it is recommended to use a multi-tooth saw blade, and a saw blade with fewer teeth is a safety hazard.
To sum up, if you encounter the problem of how to choose a saw blade in the future, you can cut more obliquely, and choose your sawing direction for cross-cutting to decide what kind of saw blade to use. , select multi-tooth for oblique cut and cross-cut, select few teeth for longitudinal cut, and select cross-cut for mixed wood grain structure.
