How Many Chisels Do You Need

The answer is four, and if you want a shorter answer it is two.

This is a page on a site that earns money when you buy chisels, so it is worth stating the incentive plainly: recommending a ten-piece set would pay us better. It would also be wrong, and the difference between a four-piece and a ten-piece set is roughly the price of the sharpening stone that would actually improve your work.

The four

1/4 inch (6mm)— dovetail sockets, small mortises, cleaning up tight corners. Probably your most-used chisel, and the one to buy the best version of if you buy them individually.

1/2 inch (12mm)— the general-purpose size. Most paring, most chopping, most hinge mortises. If you own one chisel it is this one.

3/4 inch (20mm)— wider paring, tenon cheeks, larger housings. Used less often, missed when absent.

1 inch (26mm)— wide paring, cleaning up large surfaces, anywhere a long straight reference edge helps.

That is essentially all of furniture making. The 1/4 and the 1/2 will do eighty to ninety percent of it.

Why sets go bigger

Because a ten-piece set looks like better value than a four-piece set, and because the incremental cost to a manufacturer of adding 1/8, 3/8, 5/8, 7/8 and 1-1/4 is small. The incremental cost to you is not small, and the sizes you gain are the ones that sit in the roll.

There are two legitimate exceptions. A 1/8 inch is genuinely useful if you cut fine dovetails with narrow pins; nothing else gets in there. And working to metric plans with imperial chisels, or the reverse, produces real annoyance that an extra size sometimes solves.

The arithmetic that matters

Take a budget of $120. Four good chisels and a combination waterstone plus a guide fits inside it. Ten chisels of the same quality does not, and the ten-chisel version has no way to sharpen any of them.

Six months later, the four-chisel woodworker has four sharp chisels and knows how to keep them that way. The ten-chisel woodworker has ten dull chisels and a growing suspicion that hand tools are overrated. This is the most predictable failure in the whole category.

Buying individually

Underrated. Buy a 1/2 inch first, use it for a month, and you will know exactly which second size your work actually wants — and it will be a better-informed choice than any set-buying decision. Individual chisels cost more per unit and less in total, because you only buy the ones you use.

The trade is that sets ship in a roll or a box, and chisels genuinely do need protecting — an edge that rattles against other steel in a drawer is an edge you will be regrinding.

Then stop

Once you have four sharp bench chisels, the next thing that improves your work is not a fifth chisel. It is a better stone, or a saw that cuts to a line, or a plane. Add mortise chisels when you start chopping mortises by hand and not before — see chisel types compared.