Which wood joint is cut at a 45-degree angle to form corners?

Which wood joint is cut at a 45-degree angle to form corners?

• A. Butt
• B. Dowel
• C. Dovetail
• D. Mitre (45)

Answer: (D)

Understanding how a corner is created by cutting wood at an angle defines the mitre joint. By beveling each piece at 45 degrees, two pieces can meet to form a clean 90-degree corner, which is exactly what a mitre joint achieves. This type is commonly used for picture frames and decorative trim because the joint hides end grain and presents a neat, continuous edge. Other joints work differently: a butt joint just brings two square ends together without any angle, so there’s no angled corner. A dowel joint uses cylindrical pins to align and strengthen the connection, not a specific corner angle. A dovetail joint relies on interlocking tails and pins for strength and resistance to pulling apart, and it isn’t defined by a 45-degree cut to form a corner.

Understanding how a corner is created by cutting wood at an angle defines the mitre joint. By beveling each piece at 45 degrees, two pieces can meet to form a clean 90-degree corner, which is exactly what a mitre joint achieves. This type is commonly used for picture frames and decorative trim because the joint hides end grain and presents a neat, continuous edge.

Other joints work differently: a butt joint just brings two square ends together without any angle, so there’s no angled corner. A dowel joint uses cylindrical pins to align and strengthen the connection, not a specific corner angle. A dovetail joint relies on interlocking tails and pins for strength and resistance to pulling apart, and it isn’t defined by a 45-degree cut to form a corner.