Why do I do it? Sometimes I can understand it, although I can’t offer a full explanation! Just take a look at Pic.1 below. Working from the top left, you can see how my index finger locates the tip of the saw (top left), then helps to keep the saw vertical (top right). Finally, this finger holds the square’s blade down while the other three fingertips use the recess to grip the stock, and on the marking knife, it applies pressure to…