Box Joint Design Guide
Finger Width = typically matches stock thickness
Finger Depth = mating board thickness
Odd number of fingers preferred for symmetry
Tips for Perfect Box Joints
- Use a test cut on scrap wood to verify jig accuracy
- Fingers should require light tapping to assemble (snug fit)
- Sand fingers slightly for easier glue-up if too tight
- Apply glue to both surfaces of every finger for maximum strength