Definition of Milling
Milling refers to a mechanical process of softening leather.
After tanning, leather becomes firm since the fibers stick closely together as the leather dries.
Failure to include an additional mechanical force may leave the finished leather hard and rigid, eventually interfering with its texture, performance, and appearance.
That’s why tanned leather must be physically conditioned before making the finished leather product.
To achieve this, the leather is first staked to increase its pliability and softness. It’s then tumbled in dry, high-rotating drums fitted with wood dowels with atomized moisture injected into the tumbler.
The mechanical shaking and environmental conditions cause the leather fibers to separate, and the distribution of moisture (lubricants) introduced in the wet stages of milling further softens the treated hides and skins.
Any desired level of softness can be obtained by carefully controlling the barrels’ speed, time, and humidity as it rotates.
Example of Milling in a Sentence
"Although they stopped milling leather a few years ago, the milling drums are stored in the building."
Related Terms for Milling