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Corner joints for connecting boards

Using L brackets

L shaped brackets are available to help make a corner joint. The metal strips have holes drilled in them so that once correctly positioned, they can be screwed securely. Mark where the L shaped bracket fits into the corner. Cut recesses in the wood on the top and the bottom. Glue the two pieces of wood together and at the same time screw the L shaped bracket into the recesses made on top. Then repeat the process in the recesses made at the bottom.

Using angle brackets

Use angle brackets to make a corner by screwing to the inside of the corner. Glue the two pieces of wood together and then use two brackets, one near the top and the other nearer the bottom to make and strengthen the corner.

Using triangular plywood brackets

Use will need two plywood brackets to secure the top and bottom of the corner. Glue the two pieces of wood together and then glue and pin the triangular wooden bracket to the top of the corner. Repeat with the second bracket on the bottom of the corner.

A wooden block with a triangular cross section

The triangular block should have a right edge, where two of its sides form a 90° angle. Position the block inside the two pieces of wood forming a corner. Use glue to bond the sections together as well as screws, nails or doweling.

A square wooden block inside the corner

The square cross section block should have right edges, where its sides form 90° angles. Position the block inside the two pieces of wood forming a corner. Use glue to bond the sections together as well as screws, nails or doweling.

A square wooden block on the outside of the corner

Use glue and screws to fix the block in line with one edge of the one piece of wood being used to form the corner. Use glue and position the second section of wood, leaving the wooden block on the outside of the corner joint. Screw the second section of wood to the block forming a corner where the wooden block remains on the outside.

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