Sanding leather - Buffing leather
Sanding leather involves applying an abrasive paper on a rotating roller to the surface (grain side) or reverse (flesh side). This results in a uniform surface. In the earlier times of leather production, such work was purely done manually.
When sanding the grain side, you get a light velvet-like pile. The leather is then called nubuck.
Sometimes, buffing is carried out before applying a binder-based pigment colour layer and embossing the leather. The result is then a corrected grain. This technique is done to make skin damages invisible and to obtain a uniform grain pattern in order to reduce the cutting waste. Such leather is not classed as superior quality, because the finish and the embossing reduces softness and naturalness. Aniline leather and semi-aniline leather are not buffed and are rarely embossed and are therefore higher quality and more beautiful leather.
Smoothing rough areas in the leather repair workshop