This is a technique I have used for longer necks. I'm demonstrating it on a uke neck because they seem less sacrosanct than guitars or violins. As such, people are ready to tackle a uke, patching together cigar boxes and plumbing parts with a vigor and profanity rarely administered to the noble guitar. Thhpt.
Basically, 1/16" thick slabs of wood are bent 14 degrees to make the head/neck transition. Then fiberglass is embedded in a rigid glue between the wood laminates. I use the urethane-glue-known-as-Gorilla because of its rigidity and availability. An epoxy would also do well here, but not necessarily better; it can be hard to find an epoxy of the appropriate viscosity, but Gorilla glue can be found anywhere.
This method eliminates the deadly grain run-out on the head/neck transition, which is the first spot a stringed instrument will snap when dropped or mishandled.
The fiberglass will handle most of the stress of the strings; this allows use of a lighter wood, creating a lightweight but extremely rigid neck, less fatiguing to hold, less susceptible to climate changes and ready for a lifetime of music.
Step 1: Description
A steel sting instrument is under more tension, so for those necks I bend the laminates (or "lams") and fiberglass to form the heel. Most woods do not easily bend that sharply, even in thin strips, so we'll avoid that chore for this relatively low-tension neck and build up the heel like a classical guitar.