Aniline (Sauvage) - Custom made aniline sofa with head oils - for "Singer"

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What is the best way to remove this oily soil in pcture1? We can remove cushion and work on both sides.

[Roger Koh]

What is the best way to remove this oily soil in pcture1? We can remove cushion and work on both sides.

The first step is to inspect whether the oil stain has penetrated through.

If so the cover is turn over, the cushion is plastic wrapped and replace back to keep in shape for easier handling.

We will realize that the suede side is more open or porous and easier for the stain to wick up or works by capillary action when we place the stain facing upwards.

And any physical agitation will not affect the grain finishes, as the suede side is clean with Eraser-5 and Brush-3.

Degreaser-2.2 is used to loosen up the oil and grease stain and Acidifier-2.0 is used for rinsing until towel shows clean.

Depending on the depth of the oil and grease penetration, the process may be repeated until the last waves of soiling particulates are removed.

Hydrator-3.3 helps to moves solid or colloid easier than the Acidifier-2.0 with its surfactancy.

Fatliquor-5.0 is mandatory to replenished diminished fatliquor to return suppleness to the leather when dry from stiffness and cracking.

The cover is reverse back to the grain side and repeats any surface oil and grease with Eraser-4.

In most cases oil and grease and sweat stain the finishes is also damaged.

It is recommended that the entire surrounding finishes up to the edges are removed with Razor-60 during the hydrating process when the leather structure is strong and the finishes becomes weaker for easier removal.

Roger Koh
Leather Care System Formulator / Practitioner / Consultant / Instructor / Coach

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12-21 A
Back where oil stain was is now blotchy but oil is removed. We cleaned 5 times very aggressively from behind, leather is in very good shape ( very strong). It doesn't seem to make any difference in the blotchiness when we clean it any more. If you have a suggestion we will try it, otherwise we will proceed to dye it.


12-21B
Bottom cushion to show that stains have been diminished, but are still apparent.


12-21C
Close up of same cushion.

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I would like to confirm the next steps necessary for refinishing.

This leather feels like there is still a clear topcoat and I feel like the dye would penetrate better if we wet sanded with 1000 grit (using Rinse 3.0).

After it dries thoroughly,

Adhesor, scrubbed in and wiped off with paper towel.
Repeat adhesor in any areas that are more absorbent until entire piece has same feel and absorbency.

Some areas of the leather look a little darker than original swatch so I was going to use some Micro -54 to even out the appearance.


12-21 D
Micro-54 next to original swatch

Then use Aniline -76 to do final finishing.
Reduce Aniline76 to match 25% Aniline and 75% Clear

12-21 E

Spray apply to blend and finish.

Topcoat with Aniline76 or Micro-54?

[Roger Koh]

>>> 12-21 A
Back where oil stain was is now blotchy but oil is removed. We cleaned 5 times very aggressively from behind, leather is in very good shape ( very strong). It doesn't seem to make any difference in the blotchiness when we clean it any more. If you have a suggestion we will try it, otherwise we will proceed to dye it.

What product system did you use?
What tools did you use?

[Roger Koh]

>>> 12-21B
Bottom cushion to show that stains have been diminished, but are still apparent.
>>> 12-21C
Close up of same cushion.

Those evenly dark patches may be stretch with a ball-tip spatula or smooth edge of a teaspoon to lighten up.
Those stain that has an outer edges are most probably protein-based stains that coagulates and using a bamboo skewers or toothpick will help dislodges the dark edges.

[Roger Koh]

>>> This leather feels like there is still a clear topcoat and I feel like the dye would penetrate better if we wet sanded with 1000 grit (using Rinse 3.0). After it dries thoroughly, Adhesor, scrubbed in and wiped off with paper towel.
Repeat adhesor in any areas that are more absorbent until entire piece has same feel and absorbency.

Skip the sanding.
Instead scrub Adhesor-73 with White or Grey 3M nylon pad to etch for better micron pilling.


>>> Some areas of the leather look a little darker than original swatch so I was going to use some Micro -54 to even out the appearance.

Agree!

[Roger Koh]

>>>Then use Aniline -76 to do final finishing.
Reduce Aniline76 to match 25% Aniline and 75% Clear

Match the dyestuff to the darkest remaining stain of the leather instead.

[Roger Koh]

>>> Topcoat with Aniline76 or Micro-54?

AnilineTop-76

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12-21 F
Finished looks great

[Roger Koh]

Yes, agree!