How Do Finger Touch Electric Saws Work?

One of the riskiest crafts in the world is carpentry. It takes years of experience to cut a plank and shape it into the shape you want. Those precious hands of carpenter craftsmen are very prone to damage as they unearth magnificent woodwork; because as you know they with saws they are working.

However, the development of technology, of course, saves lives here as well. Entering the lives of carpenters for the last 10 years With SawStop technology Thanks to the saws produced, the system stops abruptly as soon as the finger approaches this saw. So how do these saws detect the finger so suddenly and stop?

First, let’s examine this process: What happens when the finger approaches the saw?

If your finger comes close enough to touch the saw while you are moving a piece of wood to cut on a saw with SawStop technology, the mechanism under the saw instantly pushes the brake object towards the saw. Thus, the saw is stopped by breaking; for An object rotating at a speed of about 40 kilometers per hourIf you want to stop it with an object, you break it.

Once the saw is stopped by the object, it is suddenly pulled back into its slot. The reason for this is that if the brake mechanism does not work, the saw should be pulled down and continue to rotate there, If necessary, it will damage the mechanism, but so that the finger does not break.

We figured out how it stopped, so how do these saws detect the finger?

The finger detecting mechanism of SawStop technology depends on the electrical capacity of the finger, or in technical terms. ‘capacitance’ relies on. Capacitance is like static electricity. A capacitor (in this case, a finger) is a thin sheet of metal into which you can jam a bunch of electrons.

The SawStop system sends an electrical signal to the blade and measures how much is absorbed and returned by the blade. Here the saw is the metal plate in the capacitor. When you touch the working blade of the saw and that first saw tooth makes contact, your body is now electrically connected to the saw.

This connection between your finger and the saw significantly changes how the electrical signal from the saw is absorbed and returned; for your body is a much larger capacitor than the saw and can absorb much more electrons.

The saw detects this change in capacitance and triggers the brake mechanism to fire behind the blade. stops at the expense of breaking. In order for the saw to stop, first it has to touch your fingerbut the SawStop sensors trigger so fast that you only have a small scratch on your finger.

In summary, this technology is very similar to our smartphone screens, which do not work with gloves, but detect when touched with bare fingers. The capacitor sensors on the saw cannot detect wood because the wood is dry and cannot conduct electricity. However, the finger is perceived as a conductor and the sensors are activated.