How to Read a Woodworking Plan and Cut List

By Mark Ellis | Updated October 2026

A good woodworking plan turns an idea into a series of clear, measured steps. But if you've never used one, the drawings, abbreviations and tables can look like a foreign language. This guide explains the parts of a typical plan, how to read a cut list, and how to turn the plan into a successful build without wasting wood.

The parts of a typical plan

Plans vary by source, but most good ones include the same core sections:

1. Overview or exploded view. A drawing of the finished piece, often with parts pulled apart so you can see how they fit together.
2. Overall dimensions. Width, depth and height of the finished project.
3. Materials list (shopping list). The boards, sheet goods, hardware and finishes to buy.
4. Cut list. Every part, how many you need, and the exact size of each.
5. Tools list. What you'll need to make the cuts and assemble the project.
6. Step-by-step instructions. The order of operations, usually with drawings for each step.
7. Detail drawings. Close-ups of joints, angles or tricky areas.

If a plan is missing the cut list or the step order, expect to work out those details yourself.

Understanding lumber sizes

One of the first surprises for beginners is that a "2×4" isn't 2 inches by 4 inches. Lumber is named by its rough size before drying and planing, so the actual size is smaller:

Plans usually tell you whether a dimension is nominal or actual. Cut lists almost always use actual dimensions. Sheet goods like plywood are also often slightly thinner than their stated thickness, which matters if you're cutting grooves to fit them.

Hardwood is often sold differently, by thickness in quarters of an inch (for example 4/4, meaning roughly one inch rough thickness) and by the board foot. If a plan calls for hardwood, check what thickness you'll have after the board is surfaced.

Reading the drawings

Views. Plans often show a front view, side view and top view. Each shows the project from one direction with true dimensions. An exploded or 3D view shows how parts relate.

Dimension lines. Thin lines with arrows or ticks at each end show the distance between two points. The number on the line is that distance.

Hidden lines. Dashed lines show edges that are behind or inside something, such as a hidden joint.

Centre lines. Long-and-short dashed lines mark the centre of a part or hole.

Callouts. Letters or numbers pointing to parts usually match entries in the cut list, such as "A – Side (2)".

Take time to match each part in the drawing with its row in the cut list before you buy any material.

Reading the cut list

A cut list is a table of every piece in the project. A typical one looks like this:

Some things to know:

• The order of dimensions is usually thickness × width × length. Length runs along the grain.
• Quantity is the number of identical parts.
• Material tells you which board to cut it from.
• Notes may mention angles, grain direction, or that a part should be cut slightly long and trimmed to fit.

From cut list to shopping list

To work out how much lumber to buy:

1. Group parts by material and thickness. All the ¾" pine parts together, all the plywood together.
2. Lay out parts on each board. Sketch your boards as rectangles and fit the parts onto them. This is called a cutting diagram, and many plans include one.
3. Allow for the saw kerf. Each cut removes about ⅛" of wood with a typical saw blade.
4. Allow for defects. Avoid knots near ends and cracks (called checks). Add 10–20% extra material for mistakes and defects.
5. Check board length. Boards are sold in standard lengths, often in 2-foot increments. Choose lengths that fit your parts with the least waste.

Free online cut-list optimiser tools can do this layout for you, but sketching it by hand a few times helps you understand the process.

Before you cut: a plan checklist

• Read the whole plan from start to finish before buying anything.
• Check the overall dimensions fit the space where the piece will go.
• Confirm that the cut list parts add up. For example, check that shelf length plus two side thicknesses equals the overall width.
• Note any steps that need a tool you don't own.
• Mark any parts the plan says to "cut to fit" so you don't cut them early.

Checking the math catches errors. Even well-made plans occasionally contain a typo, and it's far better to find it on paper.

Marking and cutting your parts

• Label every part with its letter from the cut list, in pencil or on painter's tape.
• Mark the face and edge you'll measure from, and keep measuring from those same reference surfaces.
• Cut matching parts together or use a stop block so identical pieces are truly identical.
• Cut the longest parts first. If you make a mistake, the piece can often be reused for a shorter part.
• Dry fit before gluing. Assemble the parts without glue to check they fit and that you understand the assembly order.

Following the steps

Instructions are written in a specific order for a reason. Drilling holes before assembly, for example, may be much easier than reaching inside a finished box. Finishing some parts before assembly may give a cleaner result. If you change the order, think about what that affects later.

If a step is unclear, look ahead to the next drawing; seeing the result of the step often makes it obvious.

Adapting a plan

Once you're comfortable, you'll probably want to change sizes. When you do:

• Change one dimension at a time and recalculate every part it affects.
• Keep structural details, such as the number of supports for a shelf, unless you're confident they're not needed.
• Update the cut list and shopping list before buying.

Common plan-reading mistakes

• Confusing nominal and actual sizes.
• Mixing up width and length, especially for parts where grain direction matters.
• Forgetting to account for material thickness when parts overlap.
• Cutting all parts before checking the first assembly fits.

Final thoughts

Reading plans is a skill that improves with each project. Start with a simple plan that includes a clear cut list, follow it closely, and you'll quickly learn to spot what a good plan includes. For a worked example of a complete beginner plan with a cut list, see the sample birdhouse in our Ted's Woodworking review, and for help buying the right boards, read choosing wood for beginner projects.