20/09/2026
Leather is animal skin, tanned with tannins from tree bark to stop it rotting. The grain, the junction, the corium - each layer has a different use depending on what you're making.
Full grain is the premium end. Top grain is what we use for belts, tight enough to hold structure, strong enough to last.
Also, the Leatherworkers Handbook from 1963 is still in print and still worth reading.