In this joinery example, we are detailing two variations of this double tenoned scarf joint. The first uses a hardwood wedge to drive the two pieces together and the other uses pegs. If you want or need a better method you can opt to use structural screws in place of the pegs. Both offer a […]
This bladed scarf joint uses pegs to secure the two timbers together. Commonly utilized for either a sill plate or roof plate, if you add some all-thread steel rods or structural screws, it could be used in areas with light sustained tension. This joint is a half-lap joint with the addition of the tongues or […]
Nothing beats the look and strength of an undersquinted scarf joint with a wedge. In this detail we illustrate three types of methods to connect the two beams and joints together. Please note that the preferred method for scarf joint placement is over a knee brace, not over a post. Click Images for Slideshow and Larger Images This example […]
Every so often timber framers find themselves needing to lengthen a timber for a post or a rafter and for this they need a special type of scarf joint – a post or rafter scarf joint. The one seen here is adapted from the one that I used in my staircase and found in a […]
A stop splayed scarf joint is used to create longer timbers for use in plates, beams, rafters and posts when you cannot find a long enough timber to span the distance you require. The stop splayed scarf that is displayed here is extremely common and can be fastened together with pegs, all-thread with nuts and […]
Here is an exploded view of a scarf known as a timber frame bridle scarf. I haven’t personally cut this one, but my program offers it as a type of scarf, so I thought I’d show you. You should have your engineer decide on the peg placement. I just put in two to show possible […]
Here is an exploded view of a half lap scarf joint with table. I suppose you could also use wedges between the tables to pull the scarf together. On half has been rotated to show another view.
The most basic scarf for joining two timbers together is the basic half lap joint. One timber has half its depth cut away on the top and one timber has half its depth cut away on the bottom and these two pieces lap over each other. This is an exploded view of a simple half lap […]
Another scarf joint that I have used is the “bladed timber frame scarf joint”. This drawing is of a 6″ x 10″ bladed scarf joint that we cut to create one long timber for an addition to an existing barn. The scarf is 2′ long and the tenons are 2 1/2″ thick and 4″ long. […]
Sometimes in timber framing it is necessary to join two timbers end to end. This joint is called a scarf joint. One of the most popular scarf joints is the stop splayed table scarf with wedges and under squinted butts. My drawing program is meant to be used to drive a CNC machine to cut joints; […]
