Chisels are among the oldest and most essential tools in woodworking. They are versatile, capable of fine paring cuts as well as heavy mortising. However, a chisel is only as good as its edge. Many woodworkers struggle with chisel sharpening and maintenance, leading to frustration and poor results. This guide will demystify the world of chisels, covering the different types available, advanced sharpening techniques, and proper care to keep your chisels performing at their peak. Let us begin with the types of chisels. The most common is the bevel-edge chisel. This is the general-purpose chisel used for most joinery and paring work. The bevels along the edges allow you to access tight spaces, such as the corners of dovetail joints. Bevel-edge chisels come in a range of sizes, from 1/8 inch to 2 inches. A set of four chisels covering 1/4, 1/2, 3/4, and 1 inch is a good starting point. The mortise chisel is thicker and heavier than the bevel-edge chisel. Its square sides and heavy construction are designed to withstand the levering forces of chopping mortises. Mortise chisels are often struck with a mallet, so they have a bolster at the base of the handle to prevent the handle from splitting. The paring chisel has a longer blade and is intended for fine shaving cuts. It is never struck with a mallet; it is used purely with hand pressure. Paring chisels are excellent for cleaning up dovetail pins and tuning joints. The fishtail chisel is a specialized tool with a flared cutting edge, shaped like a fishtail. It is useful for getting into tight corners, such as the corners of a string inlay. The skew chisel has a cutting edge angled to the axis of the blade. It is primarily used by turners but can also be used for paring end grain. Now, let us focus on sharpening. A sharp chisel should be able to shave hair. Achieving this requires a systematic approach. The first step is flattening the back of the chisel. This is the most critical and often overlooked part of sharpening. The back must be perfectly flat for the edge to be truly sharp. To flatten the back, use a coarse diamond stone, around 300 grit. Apply a little honing oil and work the back of the chisel in a figure-eight motion. Continue until the entire surface has a uniform scratch pattern. Once the back is flat, progress to a finer grit, around 1000, then to 6000. The bevel is sharpened next. The bevel angle depends on the intended use. For paring chisels, a 25-degree angle is common. For mortise chisels, a 30-degree angle provides more durability. You can sharpen the bevel freehand or use a honing guide. A honing guide is highly recommended for beginners because it maintains a consistent angle. Set the guide to the desired angle and start on a coarse water stone, around 1000 grit. Push the chisel across the stone, applying even pressure. The entire bevel should be polished to a mirror finish on a 6000-grit stone. The final step is stropping. A leather strop loaded with green chromium oxide compound removes the wire edge that remains after honing. Draw the chisel across the strop with the bevel trailing, meaning the blade is pulled rather than pushed. Repeat on the back side to remove any final burr. A properly stropped chisel will have a razor-sharp edge that cuts wood cleanly. Maintaining your chisels is as important as sharpening. After each use, wipe the chisel clean and apply a light coating of camellia oil or machine oil to prevent rust. Never store chisels loose in a drawer where they can bump against each other. Use a tool roll, a rack, or a cabinet with individual slots for each chisel. This protects the edges and keeps them safe. When using a chisel, always be aware of where your hands are. Cut away from your body and never hold the workpiece in a position where the chisel could slip into your palm. Use a mallet for heavy chopping, not a metal hammer. When you are done for the day, give your chisels a quick strop to bring the edge back to its highest sharpness. This habit reduces the time needed for a full sharpening session. In conclusion, chisels are a long-term investment. With proper sharpening and care, a good set of chisels will last for decades, providing you with clean, precise cuts on every project.