Summary:
In this video, a table saw kickback machine is used to demonstrate the causes and prevention of kickback. The machine is designed to simulate the ideal conditions for kickback to occur, and it uses a push stick controlled from the outside of a polycarbonate box.
One of the main causes of kickback is when the workpiece is not properly secured to the fence and the blade. This can cause the workpiece to lift up and off the table, or to be pushed into the blade. The video shows how this can happen even when a push stick is used.
Another cause of kickback is when the riving knife is not used. The riving knife is a safety feature that helps to prevent kickback by keeping the workpiece from binding on the blade. The video shows how kickback can still occur even when a featherboard is used to apply inward pressure to the workpiece.
The video concludes by recommending the use of a gripper instead of a push stick. Grippers are a safer alternative to push sticks because they provide a more secure grip on the workpiece.
Here are some of the key takeaways from the video:
Kickback is a serious danger that can cause serious injury or even death.
There are two main causes of kickback: workpiece not properly secured and riving knife not used.
Grippers are a safer alternative to push sticks because they provide a more secure grip on the workpiece.
