How to Connect Plywood at 90 Degrees

Joining plywood at a perfect 90-degree angle is a fundamental skill for woodworking projects. Whether you’re building cabinets, shelves, or furniture, here are the most effective methods to create strong, reliable right-angle connections.

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Pocket Hole Method

Pocket holes provide one of the strongest and easiest ways to connect plywood at 90 degrees. You’ll need:

• Pocket hole jig
• Drill
• Self-tapping pocket hole screws
• Drill bit

Steps:

1. Set up your pocket hole jig
2. Drill angled holes at the edge of one plywood piece
3. Apply wood glue
4. Align pieces at 90 degrees
5. Drive pocket hole screws through the angled holes

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Corner Bracket Technique

When you need a quick and simple connection, metal corner brackets work perfectly:

• Use L-shaped metal brackets
• Zinc-coated or stainless steel recommended
• Various sizes from 1″ to 3″ available

Installation:

1. Position bracket inside the corner
2. Mark screw holes
3. Pre-drill small pilot holes
4. Attach bracket with provided screws
5. Ensure bracket is flush and square

How to Update Plywood Kitchen Cabinets

Pro Tips:

• Always measure twice before cutting
• Use a carpenter’s square to check 90-degree alignment
• Apply wood glue for additional strength
• Choose connection method based on project visibility and load requirements

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