What a chisel does
A chisel removes small amounts of material in a controlled way. It pares a joint to fit, cleans out a hinge recess, squares the corner of a routed pocket, or chops waste from a joint. Because it works only as well as its edge, the quality of the steel and how well you keep it sharp matter more than the number of pieces in the box.
Common chisel types
Bevel-edge chisels have sides that are angled, which lets the tip reach into the corners of joints such as dovetail joints. They are the general-purpose choice and the type most woodworkers buy first.
Butt chisels are short bevel-edge chisels. Their compact length makes them easy to control in tight spaces and handy for hinge work.
Mortise chisels are thick and heavy, with a blade built to take mallet blows and lever out waste. They are what you reach for when cutting the deep, narrow cavity in a mortise and tenon joint.
Paring chisels have long, thin blades meant to be pushed by hand, not struck. They are used for fine trimming.
Framing and construction chisels are tougher and often have a metal cap or strike surface. They suit rougher carpentry, where a chisel may meet nails or abrasive material.
Typical sizes in a set
Blade widths are commonly sold in a graduated range. Many bevel-edge sets include widths from about 1/4 inch up to 1 inch, and often a 1 1/4 or 1 1/2 inch size, in steps such as 1/4, 1/2, 3/4 and 1 inch. Metric sets cover a similar range. A set of four to six is usually enough for general work. For a beginner, a 1/4, 1/2 and 3/4 inch trio handles a large share of tasks.
What to look for in a set
- Steel and hardness. Harder steel holds an edge longer but can chip if misused, while softer steel is easier to sharpen but dulls sooner. Descriptions vary between makers, so treat vague marketing language with caution.
- A flat back. The flat face of the blade should be reasonably flat near the cutting edge, since this surface controls how accurately the chisel cuts. Some chisels need a fair amount of flattening before they work well.
- Handle comfort and fit. A handle should feel secure and balanced. If you plan to strike the chisel with a mallet, look for a handle with a reinforced end or a design meant for striking.
- Consistent finish. Look for even grinding, square sides and no visible cracks or pits.
- Reasonable packaging. A roll, rack or box that protects the edges matters more than it seems.
If you buy a mixed set, it is fine to start with a smaller one and add specialty chisels later.
Basic edge care
Chisels usually need sharpening before first use. The common approach is to flatten the back lightly, then grind or hone a bevel at a consistent angle, often in the range of 25 to 30 degrees, though manufacturers vary. A tool sharpener or a set of sharpening stones can do this; the different sharpener types each have trade-offs in speed, cost and skill needed.
Between full sharpenings, stropping the edge on a leather strip or a fine abrasive brings back keenness. If the edge has a nick or looks dull in a bright light, return to a coarser step.
A few care habits help the edge last:
- Do not use a chisel as a pry bar or screwdriver.
- Keep it away from nails and hidden screws.
- Store it with an edge guard or in a roll so edges do not knock together.
- Wipe the blade dry after use, since moisture leads to rust and a pitted edge never cuts well.
Using chisels safely
Clamp or otherwise secure the work so both hands can stay behind the cutting edge. Never place a hand in front of the blade, even for a light cut. Cut in the direction that follows the wood grain when possible, because cutting against it tends to split the wood. Wear eye protection when striking a chisel with a mallet, since chips can fly, and keep the blade sharp so you need less force. A sharp chisel is generally safer than a dull one because it is easier to control.
Do not carry chisels in a pocket, and put them down with the edge pointed away from you.
Do you need a full set?
Not at first. A reliable bevel-edge trio and a decent way to sharpen them are better than a large boxed set of dull blades. As projects require them, you can add a mortise chisel or a paring chisel. Expect to spend as much attention on sharpening gear and a good mallet as on the chisels themselves.