Glossary
Wet molding
Shaping dampened vegetable-tanned leather over or into a form so it dries permanently holding that new, rigid shape.
Wet molding is the process of soaking or dampening vegetable-tanned leather until it is pliable, then pressing, stretching, or forming it over a mold, form, or object, such as a holster over a firearm shape or a sheath over a blade, and letting it dry completely in that new shape.
It works because veg-tan leather's fibers, once softened with water, will reset and stiffen back up as the leather dries, locking into whatever shape it was held in during that drying process. This is the same underlying property that allows tooling and casing to work, moisture temporarily loosening the fibers so they can be reshaped or impressed before hardening again.
Drying slowly, away from direct heat, generally gives a stronger, less brittle result than rushing the process with a hair dryer or oven, since fast drying can make the leather stiff and prone to cracking. Over-soaking before molding can also weaken and distort the leather more than needed. A common mistake is molding leather that is too wet, which loses crisp detail and takes far longer to dry into a stable, holding shape.