Because Leather is a substance of nature and therefore of varying composition, no two leathers will always accept a given dye with uniform results. It is suggested, therefore, that the color chart be used as a guide and that swatches be tested before dyeing a finished article.
Preparing the Leather for Dyeing: in the tanning process, various protective surface finishes are given to leather hides. This finish must be removed before dyeing. Fiebing's DYE-PREP, applied with a damp sponge, is recommended for stripping off tanning finishes and making the leather receptive to dyes. In some cases, when the leather has a laquer coating, a laquerr solvent should be used before using DYE-PREP.
Applying the Dye: After the leather has been cleaned and prepared as recommended above, apply the dye evenly using a piece of woolskin, cloth or a dauber. An alternate method for covering large areas evenly is to spray with spray gun or air brush. A second coat of dye may be applied if required. After dyeing, remove excess surface dye by rubbing briskly with a soft cloth.
Color Control: When changing from a previously-dyed color, it is best to do it in two steps. First, nutralixze the original color with an intermediate color, then repeat the dyeing process with the final color desired.
Dye
mixing for Intermediate Colors:
Fiebing dyes may be combined to achieve intermediate colors or
tones not shown on the chart. In most cases, the basic rules of
color mixing apply. An infinite number of color shades are possible.
Mixtures can be tested on swatches until the desired color is
achieved.