Continued from Part 2 - The neck blank for this build consists of two pieces of Black Limba and a strip of Maple in the center, with black veneers laminated in between.
After marking out the angle of the scarf joint, it's then rough cut on the bandsaw. Using some double sided tape to temporarily hold both pieces together, they're placed in the vice and the surfaces are planed flat.
After reducing the thickness of the headstock, the joint is ready to be glued. To avoid the wood slipping under the clamping pressure, the neck and headstock are secured to the work table (packing tape is applied to the mdf table top to stop the glue sticking).
Next, the truss rod chanel is routed and then it's time to add the 'ears' to the headstock. The headstock has been tapered slightly with a hand plane before they're attached, this ensures that the ears will extend the full length of the headstock, completely covering the sides of the scarf joint.
I like to route the channel slightly deeper than the thickness of the truss rod, and then glue a fillet of wood over the top. Although not strictly necessary with this style of truss rod, I find that it helps eliminate the risk of the rod vibrating/buzzing.
The strip of Maple is left proud of the surface while the glue dries, it's then planed flush with a block plane.
The last step is to use my Jet drum sander (with the lid open, using the top of the drum), to create a smooth transition between the back of the headstock and the shaft of the neck.
The headstock is now ready for the veneers to be attached.. which I'll cover in the next blog update.