Building a Folding Stepladder with Wedged Tenons

Article 166: Building a Folding Stepladder with Wedged Tenons

By: A Woodworker Who Values Compact Strength

A wooden stepladder is essential in any workshop or home. This version folds for easy storage and uses wedged through-tenons for a rock-solid build.

Materials List

• 1×4 maple or ash:

  • (2) Legs: 48"

  • (3) Steps: 18"

  • (1) Back support rail: 36"

• ⅜" oak wedges

• Wood glue

• Brass hinges

Tools Required

• Tenon saw

• Chisels

• Drill

• Mallet

• Square

Build Steps

1. Layout and Cut Legs

   • Bevel bottoms at 5° for stable stance.

2. Cut Mortises

   • Through-mortises in legs for steps, ¾" × 1¼".

3. Cut and Fit Tenons

   • On step ends; saw kerfs for wedges.

4. Assemble Ladder

   • Glue and wedge tenons from outside.

5. Attach Folding Rear Support

   • Use brass hinges to connect back rail.

Sketch – Side View Folded

    /\
   /  \ ← Legs
  |----| ← Steps
   \  /
    \/
  (Back support folds inward)