Woodworking Techniques
MethodBefore Muscle.
BenchRoot techniques explain the sequence, reference surfaces, tool control and checks that make woodworking operations repeatable.
- 01Reference
- 02Mark
- 03Cut
- 04Check
Technique Families
An atlas of workshop methods.
Ten families of operations, each with its own references, controls and checks. Learn the family and every method in it gets easier.
- Family J
Joinery
How parts are cut to lock together — and how to lay out, cut and fit each joint.
- Mortise & tenon
- Dovetails
- Half laps
- Dadoes & rabbets
- Family L
Layout & Marking
Knife lines, gauge lines and a single reference face: where every accurate cut begins.
- Knife lines
- Marking gauge
- Story sticks
- Squaring lines round
- Face, edge, width, thickness
Stock Preparation
Rough boards to flat, straight and square parts.
- Waste side of the line
Sawing
Rips, crosscuts and cutting to a line.
- Each step removes the last
Surface Preparation
Planing, scraping and sanding in sequence.
Family R
Routing
Grooves, profiles and rabbets in passes.
Family D
Drilling
Square holes to a set depth.
Family H
Shaping
Chamfers, roundovers and curves.
Family A
Assembly & Clamping
Dry fits, glue-ups and square.
Family K
Finishing
Thin coats, applied in order.
Anatomy of a Joint
A Joint Is Geometry Before It Is Wood.
Every surface of a mortise and tenon has a job. Name them, and the order in which you lay out and cut them follows naturally.
- 01Mortise
- 02Haunch
- 03Tenon
- 04Cheek
- 05Baseline
- 06Reference face
- 07Reference edge
- 08Glue surfaces
- 09Shoulder
- 10Fit clearance
Rule 1
Shoulders register the joint
The shoulders, not the tenon, set the rail's length and hold the frame square. Knife them from the baseline and they close tight.
Rule 2
Cheeks control lateral fit
A tenon that slides in with hand pressure is right. A mallet means too thick; a wobble means glue will be doing the work alone.
Rule 3
Depth exceeds length
Cut the mortise about 1/16″ deeper than the tenon is long, so the shoulders meet before the tenon bottoms out.
Rule 4
One reference face
Gauge the mortise and the tenon from the same face side. Then any small error repeats on both parts and cancels out.
The Method Sequence
Accuracy Is Cumulative.
Cutting a mortise and tenon, in nine steps. Each one depends on the step before — a careless mark at step two shows up as a gap at step eight.
- 01
Prepare stock
Flatten, square and size every part before any marking.
- 02
Mark reference faces
Face side and face edge on every part, before anything else.
- 03
Gauge the mortise
Set the gauge to the chisel width and mark from the face side.
- 04
Cut the mortise
Chop or drill out the waste, working to the gauge lines.
- 05
Transfer shoulders
Square the baseline round the rail with a knife.
- 06
Cut the tenon
Saw cheeks and shoulders on the waste side of each line.
- 07
Pare to fit
Take fine shavings off the cheeks until it slides home.
- 08
Dry fit
Assemble without glue; check shoulders and square.
- 09
Glue & assemble
Glue the cheeks, clamp gently and check the diagonals.
Core Techniques
Ten operations, one discipline.
For each: what it is for, what it is measured from, the one control that decides the result, and how to check it before moving on.
| Technique | Purpose | Reference | Critical control | Check |
|---|---|---|---|---|
| 01Rip Cut | Cut a board to width, along the grain. | Fence against the face edge | Riving knife fitted; steady feed, never pausing | Width equal at both ends |
| 02Crosscut | Cut a board to length, across the grain. | Face edge against the miter gauge or sled fence | Stock held firmly; nothing trapped against the fence | Square to the face edge |
| 03Cut to a Knife Line | Saw exactly to a marked line. | The knife line itself | Kerf on the waste side, half the line left | Line still visible on the keeper |
| 04Square Stock | Make a part flat, straight and square. | Face side, then face edge | Face → edge → width → thickness, in that order | No wind; 90° at every edge |
| 05Mortise & Tenon | Join a rail to a leg in frame work. | Face side of both parts | Tenon ⅓ of stock; shoulders knifed | Closes with hand pressure, no gap |
| 06Half Lap | Cross or join two parts in one plane. | Face sides flush, together | Depth exactly half on both parts | Faces flush when closed |
| 07Dado | House a shelf in a side panel. | Bottom or top edge of the panel | Width matched to the actual shelf | Snug slide fit; square to the edge |
| 08Rabbet | Step an edge to receive a panel or back. | Face and edge of the part | Depth and width set separately | Part seats flat on both surfaces |
| 09Edge Joint | Make an edge straight for gluing. | Face side against the fence | Consistent pressure over the knives | Edges meet with no light between |
| 10Panel Glue-Up | Glue boards into a wide panel. | Alternated growth rings; one flat face | Even clamp pressure, top and bottom | Flat across; diagonals equal |
Accuracy & Reference Faces
Every Measurement Needs a Home.
Measure every mark from one reference edge and small errors stay small. Measure each mark from the last one and they add up.
Each mark is taken from the face edge. An error in one position stays in that position.
Each mark is taken from the one before it. A half-millimetre slip at each step becomes two millimetres by the fourth mark.
Face side
The flattest face, marked with a loop. Everything is measured from it.
Face edge
Square to the face side; marked with a caret pointing to it.
Baseline
A knife line marking a shoulder or joint depth — the waste lies beyond it.
Story stick
Real positions marked on a stick, transferred without numbers.
Knife line
A fine groove a chisel or saw can register in.
Gauge line
A line parallel to the reference face, set once for many parts.
Square reference
The square's stock always rides the face side or face edge.
Transfer
Mark one part directly from its mate instead of measuring twice.
Joinery Atlas
Eight joints, drawn in section.
Each joint solves a particular problem. Choose by the load it carries and how it will be made, rather than by appearance alone.
- Plate 01Section
Butt Joint
- Used in
- Boxes, carcasses, quick shop work
- Strength
- Relies on fasteners or reinforcement; end grain glues poorly
- Plate 02Section
Rabbet
- Used in
- Case backs, drawer sides, box corners
- Strength
- Locates the part and adds glue area
- Plate 03Section
Dado
- Used in
- Shelves and dividers in casework
- Strength
- Carries load across the joint on a ledge
- Plate 04Section
Half Lap
- Used in
- Frames, crossing rails, workshop jigs
- Strength
- Keeps both faces flush; good long-grain glue area
- Plate 05Section
Mortise & Tenon
- Used in
- Table legs, chairs, doors and frames
- Strength
- Strong against racking at the shoulders
- Plate 06Section
Bridle Joint
- Used in
- Frame corners, trestle and bench legs
- Strength
- Wide cheek glue area; resists twisting
- Plate 07Section
Dovetail
- Used in
- Drawers, chests and boxes
- Strength
- Mechanically resists pulling apart in one direction
- Plate 08Section
Finger Joint
- Used in
- Boxes and machine-cut corners
- Strength
- Many long-grain glue faces in a small corner
Common Technique Faults
Read the fault. Find the step.
Most faults point to a specific step in the method. Trace the symptom back to it before cutting another part.
F-01
Symptom
Joint won’t close
- Likely cause
- Tenon bottoms out before the shoulders meet, or glue has pooled in the mortise.
- First check
- Compare tenon length with mortise depth; clear the bottom of the mortise.
F-02
Symptom
Gap at one shoulder
- Likely cause
- Shoulders not in one plane, or the baseline was squared from different faces.
- First check
- Check both shoulders with a square from the face edge.
F-03
Symptom
Tear-out
- Likely cause
- Cutting against the grain, a dull edge, or no support where the cut exits.
- First check
- Read the grain; back up the exit with scrap or a knife line.
F-04
Symptom
Cut wanders from the line
- Likely cause
- Saw started off the line or twisted mid-cut; or the fence isn't parallel.
- First check
- Start on the waste side of a knife line; sight down the blade.
F-05
Symptom
Panel glue-up bows
- Likely cause
- Clamps all on one side, or too much pressure pulling the boards into an arc.
- First check
- Alternate clamps top and bottom; ease the pressure; use cauls.
F-06
Symptom
Dado too loose
- Likely cause
- Width set from nominal thickness, not the actual shelf.
- First check
- Size the dado from the shelf itself, with a test cut in scrap.
F-07
Symptom
Mortise wall breaks out
- Likely cause
- Levering the chisel against the end walls, or a mortise too close to the end.
- First check
- Leave the ends until last; keep waste on the leg's end until after.
F-08
Symptom
Finish shows sanding scratches
- Likely cause
- A skipped grit, or cross-grain scratches left by the sander.
- First check
- Inspect under raking light before finishing; don't skip a grade.
Method, Then Result
Mark the Line.Follow the Method.
Accuracy is built one step at a time — a reference face, a knife line, a careful cut and a check before the next.