# Cutting & Shaping Wood

1. Have you ever used a 3/4" router

2. Dovetail joint drawing The layout of dovetails involves cutting the

3. #### Calculating Polygons

Polygon calculations come up frequently in woodworking. Finding the angles and dimensions of used in building multi-sided frames, barrels and drums (to name a few applications) begins with an understanding to the geometry of regular (symmetrical) polygons.

4. Not all woodworking machinery angle scales are created alike. In fact, there are two different conventions for the calibration of angle scales in common use on woodworking machinery. One type of scale is calibrated to treat a square cut as a 90 degree cut, while the other scale treats a square cut as a 0 degree cut. Along with that, the terms used in woodworking to describe angled cuts don't make the origin of the angle measurement perfectly clear. The result is often some confusion about what it means to cut a piece of wood at a certain angle. Fortunately, the confusion is easily clarified by looking at a couple of woodworking terms that refer to angled cuts ("miter" and "bevel") and at how the two saw scales are set up the measure angles.

5. To make sure your drill press is pushing through straight, use a dial indicator precision shaft to test it for any wobble. Among a variety of “setup” tests, I measured flatness and front-to-back squareness of each machine’s table. I also checked for runout (wobble) at the chuck by installing a precision shaft and taking readings off of a dial indicator while slowly rotating the spindle. Runout varied from .001" to .011", but that range of deviation from a single axis of rotation didn’t seem to transfer into noticeably smoother holes or out-of-round holes.

6. Box joints might not be the most interesting or attractive joints, but they are very sturdy and simple to cut in most shops. Although not as dressy as dovetails, box joints are versatile joints great for all kinds of everyday projects. You can use them to build attractive boxes and trays, good-looking drawers and carcasses, and tool totes and chests strong enough to withstand daily use.