>>> Can these chairs be restored?
Yes, they can be restored to lighten the browning discoloration.
>>> We have not had any luck in the past. Can you educate me on a few things? Is Vachetta full grain, it is extremely thick?
Yes, they are full grain, it means the surface of the grain is not corrected by buffing or sanding.
>>> Is Vachetta vegetable tanned?
Yes, Vachetta is vegetable-tanned. Vachetta is the name given to vegetable-tanned leather that remains naked and unfinished. This chair has a topcoat finish like AnilineTop-76 applied to it, so they are not called vachetta, but finished vegetable-tanned. Once the coating wear out, then what you are dealing is
Vachetta leather. To even out the blotchiness, strip off the gloss clear coating with Stripper-2.3 > Acidifier-2.0 > Hydrator-3.3 > Fatliquor-5.0 in a continuous “wet-process”. A wet-process means that during the continuous step the leather must not be allowed to be dried, otherwise when without sufficient fatliquor (fat and oil) about 15% when dry, the leather will stiffen up and mishandling will crack it easily. This vegetable-tanned leather is very thirsty of Fatliquor-5.0. Fatliquor is the lifeblood of this leather. After the final rinsing off the Fatliquor-5.0 sticky residue with Hydrator-3.3 leaves it to very slow dry. Apply Vachetta-2.8 to redox (reduction-oxidation) chemical reaction to even out the appearance. When the appearance is satisfactory, otherwise repeat. Sealing it again with AnilineTop-76G will return to match the original finishes. Rub resistant protector that matches AnilineTop-76G is Protector-B/B+.
See this Leather Vachetta Grease Darkening Effect Remover - Kit-V4
http://www.leatherdoctor.com/leather-vachetta-grease-darkening-effect-remover-kit-v4/
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Roger Koh
Leather, Skin, Hair, Eye & Acne Care System Formulator
Consultant / Practitioner / Instructor / Coach
web: www.leatherdoctor.com
forum: www.leathercleaningrestorationforum.com
email:
[email protected]