What type of guard should always be used during table saw operations?

Using a combination of safety devices, such as a push stick, riving knife, and blade guard, is essential for safe table saw operations. The blade guard is particularly important as it serves to cover the blade when not in use, reducing the risk of accidental contact. It also helps to divert sawdust and debris away from the operator, enhancing visibility and minimizing the chances of kickback.

The riving knife plays a critical role in preventing kickback by keeping the material being cut from closing back onto the blade after the cut, making the operation smoother and safer. A push stick is an important tool to ensure hands remain a safe distance from the blade while guiding the workpiece, thereby preventing potential injuries.

By using all these safety measures together, the operator can significantly enhance their safety and the effectiveness of their work. Therefore, it's crucial to always employ a combination of these devices to promote safe practices while using a table saw.