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.
Medical Definition of FIBRIN. : a white insoluble fibrous protein formed from fibrinogen by the action of thrombin especially in the clotting of blood.â fiÂ·briÂ·nous \-brÉ-nÉs\ adjective.See fibrin defined for kids. a white insoluble fibrous protein formed from fibrinogen by the action of thrombin especially in the clotting of blood. â fiÂ·briÂ·nous \-brÉ-nÉs\ adjective.