Smaller, smooth-sanded 3"–4" rounds are ideal for ornaments or coasters.
Freshly cut "green" wood contains high moisture levels. As it dries, it naturally shrinks, which often causes the bark to fall off and large cracks (checks) to form. buy tree stump slices
Sellers like Birch Bark Store use a kiln to scientifically control moisture, which prevents mold, shrinkage, and splitting. it naturally shrinks