Make an interlocking Garden Bed Box

Table of Contents

• 1Introduction
• 2Step 1. Cut the boards and mark the trenches
• 3Step 2. Set the depth of the power saw blade
• 4Step 3. Make cuts along the cut-out area
• 5Step 4. Clean out the grooves
• 6Step 5. Prepare and mark the opposite side
• 7Step 6. Cut the opposing trench
• 8Step 7. Clean out the opposing trench
• 9Step 8. Make some half-height boards
• 10Step 9. Lay the bottom row of boards
• 11Step 10. Stack 'em up

Standard version (ft and inch)

Unclamp the boards.
Get two runners the same thickness as a boardA piece of sawn, or dressed lumber of greater width than thickness. Usually 19mm (3/4") to 38mm (1 1/2") thick and 75mm (3") or more wide. and longer than 2ft. Make the eight over 2″.
Turn the boards over and have the trenches sit over the runners i.e., the two runners will be in the tenches.

Clamp the boards together, and when positioning the clamps ensure there will be enough free area to work the power saw when making multiple cuts across the cut-out area (yet to be marked).

On the sides, mark square lines up from the trench below and from there mark the cut-out area across the top.

MetricMillimeter measurements. version

Turn it all over so the boards are sitting on a couple of runners (the same thickness as a board) fitted into the grooves.
This will keep all the boards in line while you take off the clamps from the underside and re clamp on the top side.
Be sure to position the clamps away from the cut-out area to allow working space.
Square up (with a pencil and square) from the grooves each side, and from those (squared up lines) mark the cut-out area across the edge of the boards.