Buy four bevel-edge widths: 1/4 in., 1/2 in., 3/4 in. and 1 in. If you can only start with two, make them 1/4 in. and 1/2 in. — those two will cut your first dozen projects on their own. Everything past four widths is refinement, and a lot of what gets sold as a “set” is padding around those four.
That is the short answer. The longer one is worth reading because it changes how you shop: the number on the box is the least useful specification a chisel set publishes, and it is the one the price is set by.
What each width is genuinely for
1/4 in. — the dovetail and detail chisel
The width that fits between dovetail pins, cleans small mortises, and gets into corners nothing wider reaches. If you cut joints by hand this is the chisel that wears out first, which tells you how much work it does. A narrow chisel is also the easiest to steer, because there is less edge to keep registered against the wood.
1/2 in. — the one you reach for without thinking
The default. Wide enough to pare a tenon shoulder in a couple of passes, narrow enough to chop a hinge mortise, and the size that fits most of the mortises a small piece of furniture contains. If you own one chisel, own this one.
3/4 in. — the paring width
This is where a chisel starts behaving like a small plane. A wider edge spans more of the surface you are flattening, so it bridges low spots instead of following them, which is exactly what you want when truing a tenon cheek or a half-lap. It is also the width that starts to need two hands.
1 in. — the one bought last and used immediately
The width most people leave out of their first purchase and then wish they had. One inch cleans glue squeeze-out off a panel in single strokes, flattens the bottom of a wide housing, and trims a proud through-tenon flush without leaving steps. It does the jobs you did badly with a 1/2 in. chisel before you owned it.
Why set count is the wrong thing to shop on
A ten-piece set at the price of a four-piece set is not better value — it is a signal about the steel. Chisel cost is dominated by the steel and the grinding, so if the price per chisel falls by half, something in the steel or the heat treatment has given way. A chisel that will not hold an edge is not a bargain at any count, because the time you spend at the stone is the real cost of owning it.
The sets worth buying tend to publish two things: the steel alloy and a hardness figure. Those two numbers tell you more about how the chisel will behave than the number of chisels in the box ever will, and we rank the field on them in the best woodworking chisels.
Bevel-edge, mortise or paring?
Width is only half the specification. The other half is the pattern, and three patterns cover the market.
- Bevel-edge bench chiselshave the long sides of the blade ground away to a narrow land, so the blade can get into an acute corner — a dovetail socket, for instance. This is the pattern you want for a first set, and it is what every chisel ranked below is.
- Mortise chisels are thick, square in section and designed to be levered against the walls of a mortise while being struck hard. They chop deep mortises far better and cannot reach into a corner at all.
- Paring chiselsare long, thin, flexible and never struck — hand pressure only. Lovely for fitting work and a mistake as a first purchase.
Buy bevel-edge first, in the four widths above. Add a mortise chisel if you find yourself chopping mortises by hand regularly, which our mortise and tenon guide covers, and add a paring chisel when fitting rather than cutting is where your time goes.
Metric or imperial, and whether it matters
It does not, with one exception. Chisels are not measuring tools — you are registering the edge against a line you already marked, not using the chisel to set the dimension. A 6 mm chisel does everything a 1/4 in. chisel does.
The exception is a chisel that has to match a cut made by something else: a mortise chisel used to chop a mortise sized to a router bit, or a chisel squaring the corners of a machine-cut mortise. Then the width wants to match the bit, and mixing systems makes that arithmetic annoying.
The number that matters more than any of this
A sharp cheap chisel beats a dull expensive one at every width, every time. Steel quality buys you time between sharpenings, not sharpness — the edge you get is the edge you put on it. If you are choosing between a better set and a sharpening setup, buy the sharpening setup.
We walk through the routine in how to sharpen chisels, and the kit choices are in sharpening stones and honing guides. One of the sets ranked below includes a stone and a guide in the box for exactly this reason.
What each set actually contains
Published listing specifications for the four sets above. Read the piece count against the widths: a six-piece set spanning 1/4 to 1 in. covers the four widths this page recommends and two more besides, while a ten-piece set at a quarter of the price is telling you something about the steel rather than the coverage.
| Set | Pieces | Steel | Published hardness |
|---|
| Narex Richter bevel-edge | 5 | Cr-V, cryo-treated | Claimed 62 HRC |
| Narex bevel-edge (Woodline) | 4 | Cr-Mn | ~59 HRC |
| Irwin Marples M444 | 6 (1/4–1 in.) | High-carbon | 58–61 HRC (published) |
| WORKPRO wood chisel set | 10 | Cr-V | Not published |
Reading a hardness figure
HRC is the Rockwell C hardness scale, and for woodworking chisels the usable band runs roughly from the high 50s to the low 60s. Harder steel holds an edge longer and is more brittle — it will chip rather than roll if you lever it sideways or hit a nail. Softer steel dulls sooner and is more forgiving, and it sharpens faster.
So a published 62 HRC is not simply “better” than a published 59. It is a different trade: longer between sharpenings, less tolerance for abuse. A beginner chopping mortises in construction lumber is better served by the softer, tougher chisel, and that is not a consolation prize.
Note that the budget set above publishes no hardness figure at all. That absence is itself information, and it is written into that product's cons rather than filled in with a guess.
How many chisels does a first shop need? Honestly, two
If money is tight, buy a 1/4 in. and a 1/2 in. in good steel rather than ten chisels in poor steel. You will cut dovetails, hinge mortises, tenon shoulders and housings with those two, and you will do it with edges that stay sharp long enough to finish a cut.
Add 3/4 in. and 1 in. the first time a job makes you wish for them — which for most people is the first wide panel they clean up or the first through-tenon they trim. Buying the whole range up front is not wrong; it is just not necessary, and it is how people end up with eight chisels and no stone.
What to check when the chisels arrive
Three things, in this order. First, lay the back of each blade on a flat reference and look for light under the edge: the back has to be flat for the last inch or so, and flattening it is your job on any chisel at any price. Second, check the edge is square across the width, because a skewed edge cuts a skewed line and it takes real grinding to fix. Third, check the handle is seated and the ferrule tight — a loose handle on a struck chisel gets worse, not better.
None of these is a defect to return the set over. All three are the normal condition of a new chisel, and the reason a sharpening setup is a prerequisite rather than an upgrade.
Where these numbers come from
Piece counts, steel alloys, hardness figures and handle materials above are the manufacturers' own published listing specifications, cited per set in Sources. Where a maker publishes no hardness figure, we say so rather than estimating one. We have not tested edge retention — we do not run a lab, and our methodology page says so in those words. Prices come from the live price feed.
