I usually use plumwood for crafting my instruments. The main characteristic of this type of wood is its stability when being used as a windinstrument. Plumwood resists moisture relatively well. It is for this reason that taps in wine and beer kegs were often made out of plumwood.
I also use boxwood and pearwood for my cornetts.
All the wood is of first-quality and has been air dried in a natural manner.
The cornetts are coated with goat or sheepleather or parchment. The leather is glued on the wood with bone glue.
All the moutpieces for my cornetts are made out of ivory or buffalo horn.