The Marking Gauge

The marking gauge has a steel spur sharpened like the point of a pencil. The spur scribes a line by parting the fibers of the wood, so it works beautifully with the grain, but tears up a mess across the grain. The spur is made of extremely hard steel, too hard to sharpen or reshape with a file, so you have to use a sharpening stone. A new marking gauge usually comes ready to use. If you're looking at a used one, make sure the spur hasn't been replaced with a nail or brad, which are too soft to hold a sharp point.

The spur should stick out in. from the stock. Since it usually extends through to the back side, you can adjust it with hammer taps. To tighten a loose spur or reposition it, drill a new hole and hammer the spur in. If you try to drive it without a pilot hole, it probably won't go in straight and you might split the stock.

Using the marking gauge. To mark the board's face (above left), start with the gauge up on one corner of the stock, then roll it into the work. Make several light passes instead of digging the spur in deep. When marking the face far out from the edge before ripping to width, support the stock with your thumb (above right).

0 0

Post a comment