alloy blade deformation

Question: cut timber skew, of varying lengths, the cutting surface uneven, with flash, blade deformation, broken teeth, broken blade, short life.
Reasons: (many situations because it is not caused by attention to detail).
Material: Sometimes the  masonry saw blades  problem is with the material to be cut, because there are too many materials purchased impurities, so when the blade hit these impurities particles, super-hard blade may break or give great sound, cut out of the surface will be uneven. But with softer HSS saw blade can not break, but the results will be skewed cutting phenomenon, because the blade when in contact with particles shift phenomenon.
Blade: Blade not properly gracefully compressive deformation, serrated blunt out no grinding, yaw rate deviation, number of teeth inappropriate choice of saw blade strength is not correct, choose the wrong blade, blade quality is poor.
Cutting machine: Jig Saw a state filled with incorrect number of revolutions does not correct cutting speed and blade with cutting oil selection cutting machine error may be due to influence each other.
There are customer complaints cutting results skewed to the site via our observations, feeding rack not fixed in the factory personnel transport material, often crooked off accidentally collide. Workpiece feeding rack crooked off after, of course, cut out of the material must be crooked.
Customer complaints are also often broken circular saw blades can not be resolved, we have a mechanical design to the scene found that the book has been pointed out, the longer the cutting material, must have been cut by Taiwan to make the segments are not shaking. However, the flap discs  customer still and chopped material as well, so the blade will have to be cut by shaking timber crashed.
There is also the customer's machine is not in the installed horizontally correction, so the machine was fundamentally crooked.
Using fake machine: Because most of the cost of the machine in the mechanical materials, machine parts cheap that the use of cheap, of course, there is no guarantee of quality. Therefore, there may be insufficient because of mechanical stability undue impact or shaking.
Manual machine (operator): Since the machine is manually operated manually, sometimes the operator under the knife under the knife too hard or too fast, it may cause blade breakage.
Blade must be used otherwise the following considerations may still generate more questions:
Must determine the cut material has a good fixed.
Material to be cut according to the cutting conditions are set.
Filled with saw, must be part of the jig clean out debris, and then pay attention to the direction of rotation, the blade properly fixed.
Cutting and  concrete saws stop cutting at the beginning, do not feed too fast. (May cause broken teeth and damaged) make full use of cutting oil (I hope with the work material selection cutting oil) Disposable circular saw blade circular saw blade cutting machines and cutting machines generally different, we must choose the correct blade.
Can not be mixed, unless the purchase dual-use models.