A scarf joint is an angled joint made from two pieces of wood that are cut at complementary angles and glued together. On the PRS S2 series, the neck begins with a quartersawn mahogany neck blank. That blank is cut, the headstock is scarfed, and the heel is created using a plain splice - all from one piece of wood. This construction method allows us to start with a smaller amount of raw material, and the increased glue surface area results in a very strong joint.