Jack Plane: The Ultimate Versatile Plane

Last reviewed on 2026-04-24

The jack plane — classically the Stanley No. 5 at 14 inches — is the most general-purpose bench plane ever made. The name itself comes from "jack-of-all-trades": a plane large enough to take real material off a board, compact enough to smooth when asked, and long enough to joint edges that are not too ambitious. If a woodworker can own only one full-size bench plane, it is almost always the No. 5.

Why the No. 5 Is Special

Three design choices push the jack plane into the "do-everything" slot. The body is 14 inches, which is a real compromise: long enough to bridge hollows on stock under a couple of feet, short enough to follow contours when smoothing, and weighty enough to cut steadily without fighting the user. The 2-inch iron is wide enough to cover the working area of a typical board in one or two passes. And the 45° bed angle — the Bailey-pattern default — is the standard angle the rest of the hand tool world is designed around, so any sharpening or chipbreaker technique translates directly.

The No. 5½ is the heavier, wider cousin at 15 inches with a 2⅜-inch iron. Much of the extra mass goes into chatter resistance. It is not strictly necessary; most shops do fine with a standard No. 5.

How a Jack Plane Is Set Up

Three different setups turn the same plane into three different tools:

• Rougher: sharpen the iron with a pronounced camber (about 8-inch radius) and open the mouth. Use for rapid stock removal across the grain, taking heavy shavings. This is how a jack earns its name.
• Try plane / general use: sharpen with a light camber (2–3 thousandths higher in the middle than at the corners), set the chipbreaker 1–2 mm from the edge, and leave the mouth at a medium opening. This configuration smooths, takes down high spots, and shoots edges with reasonable precision.
• Smoother: sharpen almost straight across with softened corners, set the chipbreaker within 0.5 mm of the edge, and close the mouth. The plane now takes whisper shavings and leaves a surface that rivals a dedicated smoother.

What the Jack Plane Does Best

For most shops the jack plane is the workhorse between the scrub (if you use one) and the smoother. Typical uses:

• Flattening a rough face: scrub across the grain to knock off high spots, then switch to the jack to refine diagonally and lengthwise.
• Taking down thickness: when you need a board a few millimeters thinner and no machine is available, a cambered jack plane removes material efficiently.
• Dressing edges: for boards under about 3 feet, a No. 5 jointed edge meets another No. 5 edge well enough to glue without daylight.
• Smoothing narrow stock: with the smoother setup it handles drawer sides, small tabletops, and furniture components without needing a separate No. 4.

Choosing a Jack Plane

Vintage Stanley No. 5s from the 1940s to 1960s are abundant, inexpensive, and excellent candidates for a first bench plane. Key things to check on a used example:

• No cracks around the mouth, tote mounting, or knob post.
• Adjustment wheel moves smoothly and engages the iron without excessive backlash.
• Sole is free of deep pits and responds to straightedge checks within reason.
• Iron and chipbreaker are present and not pitted at the edge.

Modern premium options from Lie-Nielsen and Veritas require no restoration and have thicker irons and heavier castings. They cost several times as much as a vintage plane but are ready to use.

Common Issues

• Plane skips or chatters: iron is dull, chipbreaker is loose on the iron, or the lever cap is not tight enough.
• Shavings clog the throat: mouth is too tight for the shaving, or chipbreaker is slightly lifted allowing shavings to wedge underneath.
• Won't cut evenly across the width: iron is projecting further on one side — tap the lateral lever toward the deeper side until the cut evens out.