Scarf Joint

Like all other scarf joints, you can use this joint to create a longer beam out of two shorter timbers. The cogs in this joint are the t-shape projections in the tenon. Since they help lock the joint in place, they also increase the bending strength against horizontal loads.

This stop bladed scarf joint with cogs takes a bit more work to cut than a simple bladed scarf joint. But the cogs (the projections into the tenon that form a t-shape) added to the stub tenons help lock the joint in place.

If you need to span a distance greater than your lumber dimensions, scarf joints are the way to go. Another variation on the scarf joint, this stop bladed scarf joint is a half-lap joint with the addition of the stops, also called tongues or blades.

The half pegged bladed scarf joint is a half-lap joint with the addition of the tongues or blades connecting one beam to the other. The blades add more surface area and create a strong, attractive joint.

All scarf joints serve the same purpose – to enable you to span a length greater than the the size of your timbers. Any scarf joint effectively creates one long timber from two shorter ones.

Like all other scarf joints, this half lap with table scarf joint gives you the ability to create spans longer than the length of your lumber. Similar to other half lap joints, this one consists of each timber being split longitudinally,

When you need a beam longer than the sizes of your lumber, a scarf joint is the way to go. In this attractive half and bridled scarf joint, each beam is split longitudinally and connects to its partner with a mortise on one end and a tenon on the opposite end.