The best material for a shim is a thin piece of maple veneer. Most bolt-on necks are made of maple, so it makes sense to make a shim from the same material. The wood can be easily shaped to fit the neck pocket and angled to the proper degree. I typically start with a piece of maple about .060 thick.
Lignin is a class of complex organic polymers that form important structural materials in the support tissues of vascular plants and some algae.[1] Lignins are particularly important in the formation of cell walls, especially in wood and bark, because they lend rigidity and do not rot easily.
Definition of RENNIN. : an enzyme that coagulates milk and is used in making cheese and junkets; especially: one from the mucous membrane of the stomach of a calf.See rennin defined for kids. ADVERTISEMENT.renn et + 1-in. an enzyme that coagulates milk and is used in making cheese and junkets; especially: one from the mucous membrane of the stomach of a calf.