The mitre joint is another one of those woodwork joints that is almost as easy to construct and make as a butt joint. Even though it is similar to a butt joint this joint is marginally stronger and has much greater aesthetics.

The reason why this type of joint is stronger and more appealing than a butt joint is because the ends are cut at a 45° angle and then glued together, this creates better surface area for adhesive to be applied while also concealing the end grain giving it a nice flush look.

The best results for these joints are achieved by cutting the angle of the joint with a drop saw instead of a hand saw, this creates very straight and neat edges.

The mitre joint is very common on picture frames because there is no end grain showing and they don't require much holding strength. Sometimes a frame made from this type of joint is used to attach or cover the edges of wood panelling.

How to Make Mitre Joints