Kate Spade - Recover what I have did .

Attachment 1520 This is the origin color from inside .


Attachment 1521 This is after I touch up but is not perfect cos after I do the finishing the color change and look like have two tone of color ,end up I dye the whole bag.


Attachment 1522
This is after I do a cleaning using leather cleaner and the color came out .as you can see the lighter color is my work I have mix and match. This is what I say two tone after I done the finishing the color change.


Attachment 1525 Do you have any idea to dye the bag by not touch the thread ,actually the original color white .

Thank roger .

The thread is unavoidable when doing a color refinishing.

Picture 1 is a two-tone finish, your refinishing looks mono-tone.

FYI
From the texture of the leather, this is a pigskin leather.

Roger
www.LeatherDoctor.com

So Roger how can it be solve ? Can it dye back the origin color ?

The possibility to restore back to the original two tone is very slim, almost impossible.

The difficulties being now that the leather is no more in a single dimension like a sheet of paper but in three dimension makes it more difficult to recreate.

By looking at it from pictures, we are merely making a guess, not knowing the actual process thus may turns out differently.

What if i dye back to the nearest colour? Will your dye stay ?
How do i order the training kit will it help ?

>>>What if i dye back to the nearest colour?
From the original, the finishes looks two-tone (wipe-effect), where the darker tone is first applied follows with the lighter tone and is then wipe off at the tip before finish with a gloss topcoat.

>>>Will your dye stay ?
For a coating application, a foundation, sealer or primer like Adhesor-73 will ensure promotion without peeling.

>>>How do i order the training kit will it help ?
I think the prices is already given to you, just indicate which kit you wish and we will prepare you a PayPal invoice.

You need understanding how color fashion is created before you know what you are doing.

For your information, we have just concluded a private training for an Australian customer base on practical hands-on with the 4 training kits and theory from the “Leather Care Technician Handbook” by Roger Koh.

So the products from the training kit will still require some understanding of the various finishes types of how it was original created and what can be done and how to do it.

Roger
www.LeatherDoctor.com

>>>What if i dye back to the nearest colour?
From the original, the finishes looks two-tone (wipe-effect), where the darker tone is first applied follows with the lighter tone and is then wipe off at the tip before finish with a gloss topcoat.

>>>Will your dye stay ?
For a coating application, a foundation, sealer or primer like Adhesor-73 will ensure promotion without peeling.

>>>How do i order the training kit will it help ?
I think the prices is already given to you, just indicate which kit you wish and we will prepare you a PayPal invoice.

You need understanding how color fashion is created before you know what you are doing.

For your information, we have just concluded a private training for an Australian customer base on practical hands-on with the 4 training kits and theory from the “Leather Care Technician Handbook” by Roger Koh.

So the products from the training kit will still require some understanding of the various finishes types of how it was original created and what can be done and how to do it.

Roger
www.LeatherDoctor.com

Roger , where can get information and understanding of the various finishes?

Pls send paypal of the full set of training kit and i will do self leaning ,what is the cost and time for private training ?

At the moment i have a furniture company which sell leather sofa from ITAIY request me to become they're warranty agent for repairing accident stain ,accident damage and do you advice me to take the challenge using your product ?

Thank roger :o

Quote:

---

Originally Posted by key of restoration

Roger , where can get information and understanding of the various finishes?

---

Below is the handbook used for training the first Australian customer to set up their business in leather cleaning and restoration.

You may go through the contents of this handbook and see if it will help you in your business as well.



Leather
Care
Technician
Handbook

Version 3.0

by
Roger Koh



Table of Contents

Chapter 1 19
Leather History 19
Chapter 2 20
Leather Origin 21
Bovine 21
Cattle hide 21
Cowhide 22
Kip Skin 22
Calfskin 22
Slink 23
Bull Hide 23
Heifer 23
Steer 23
Water Buffalo 24
Cordovan 24
Deerskin 25
Buckskins 25
Goatskin 26
Sheepskin 27
Shearling 28
Hair Sheep 29
Pigskin 29
Kangaroo 30
Alligator 30
Crocodile 31
Lizard and Snake Skin 32
Ostrich leather 33
Stingray 33
Shagreen 34
Sharkskin 34
Fur 35
Chapter 3 36
Leather Making Process 36
Source of Leather 36
Flaying 37
Ripping 37
Casing 37
Sorting 37
Curing 38
Operational Sequence of Process 39
Tanning Process - Flow Chart 40
Process Prior to Tanning 41
Storage 41
Sorting 41
Soaking / Washing 42
Liming 42
Unhairing 43
Fleshing 43
Deliming 44
Bating 44
Pickling 44
Tanning Process 45
Vegetable Tanning 46
Chrome Tanning 46
Synthetic Tanning 47
Aldehyde Tanning 47
Brain Tanning 48
Rose Tanning 48
Alum Tanning / Tawing 49
Process after Tanning 50
Wringing 50
Sorting & Grading 50
Trimming and Siding 51
Splitting 51
Shaving 51
Combination Tanning Process 52
Coloring 52
Fatliquoring 52
Setting Out 53
Drying 53
Conditioning / Wetting Back 54
Staking & Dry Milling / Tumbling 54
Buffing 54
Finishing sub-process after Crusting 54
Plating 55
Chapter 4 57
Leather Finish Types 57
Hair-on-Hide 57
Bag 57
Garment 58
Furnishing 58
Zebra Hide 58
Rug 59
Unfinished Leather 60
Unfinished Leather (Wet-White) 60
Unfinished Leather (Vachetta) 62
Napped Leather 62
Napa Suede 62
Split Suede 63
Suede Imitation 63
Nubuck 65
Aniline Leather 66
Glazed Aniline 66
Pure Aniline 67
Waxed Aniline 67
Gloss Aniline 68
Full Aniline 68
Full Sauvage Aniline 68
Pigmented Finish 69
Full-Grain Pigmented Leather 69
Top-Grain Pigmented Leather 70
Corrected-Grain Pigmented Leather 70
Split Pigmented Leather 70
Special Effect Leather 71
Mechanical Manipulation 71
Glazed Leather 71
Shrunken Grain / Pebble Grain Leather 71
Stamped / Embossed Leather 72
Oil or Wax Impregnation 72
Pull-up Leather (Oil, Wax, Oil and Wax) 72
Pigmented Effect 73
Micro-Pigmented / Semi-Aniline Leather 73
Tipping Leather 73
Antiquing Leather 74
Sauvage Leather 74
Marbled Leather 74
Specialty Secondary Coloring Effect 75
Pearlized Leather 75
Metallic Leather 75
Fluorescent Leather 76
Laminating Effect 76
Foil Leather 76
Bicast Leather 77
Binders Effect 78
Chapter 5 79
Leather Definition 79
Structure 80
Skin 81
Pelt 82
Rawhide 82
Parchment 83
Vellum 84
Chapter 6 85
Leather Characteristic 85
Product of Nature 85
Non-Perishable 85
Natural Marking 85
Protein Fiber 86
Tensile Strength 86
Flame Resistant 87
Durability 87
Shape Conformity 87
Transpiration 87
Chapter 7 88
Leather Chemistry 88
Amphoteric 88
Isoelectric Point 89
pH of Leather 90
Molecules 90
Polarity 91
Dipole Moment 91
Hydrogen Bond 92
Ionization 93
Ion 94
Hydrogen Ion 94
Hydroxyl Ion 94
Zwitterion 94
Cation & Anion 94
Self-ionization of Water 94
Leather Hydration 95
Chapter 8 96
Leather Cleaning Chemistry 96
Solution 96
Solvation 96
Concentration of Solution 96
Aqueous Solution 96
Dry Solvent 97
Surfactants 97
Hydrophobic & Hydrophilic 97
Neutral, Acid & Alkaline 98
pH Scale 98
pH Scale with Examples of Acidic and Alkaline Leather Products 99
Chapter 9 101
Leather Specialty Chemistry 101
Antimicrobial 101
Biocide 102
Fungicide 103
Disinfectant 104
Sanitizer 104
Oxidizing Agent 104
Reducing Agent 104
Bleach 104
Chapter 10 106
Leather Solution Formulation Chemistry 106
Emulsion 106
Compound 107
Mixture 107
Destabilization Phenomena of a Suspension 108
Suspension 109
Chapter 11 110
Leather Standard and Reference Cleaning Guide - IICRC S300 110
IICRC S300 Leather Cleaning Standard 110
Leather 110
Finished Leather 110
Dry Solvent Caution 110
Safe Cleaning 110
Dry Soil Removal 111
Soil Suspension 111
Chemical Action 111
Heat / Temperature 111
Agitation 111
Time 111
Soil Removal (Extraction) 111
Conditioning 112
Grooming / Buffing 112
Drying Time 112
Chapter 12 113
Leather On-Location Cleaning Preparation 113
Mental Readiness 113
Personal Appearance 113
Work Vehicle Appearance 113
Correct Chemical & Equipment Loaded 113
Qualify Results 113
Signed Disclaimers 113
Prep Area with Appropriate Floor Protection 114
Chapter 13 115
Leather Cleaning Equipment 115
Power Tool 115
Vacuum Cleaner (high filtration or HEPA) 115
Heat Gun or Blow Dryer 115
Sander 115
Airbrush 116
Air Compressor 116
Container 116
Bucket 116
Foaming Bottle 117
Spray Bottle 117
Brush 117
Horsehair Brush 117
Nylon Brush 117
Brass Brush 117
Scrubber 117
Steel Wool 117
Tack Cloth 118
Sandpaper 118
Leather Eraser 118
Suede Eraser 118
Product Applicator 118
Soil Extraction Cloth 118
Application Cloth for Conditioner & Protection 118
Personnel and Property Protector 118
Drop Cloth 119
Mist / Dust Mask 119
Disposable Latex Glove 119
Other Tools 119
Sponge 119
Scrapping Tool 119
Microscope 119
Pipette 119
pH Meter 119
Chapter 14 120
Leather Identification 120
Visual Inspection 120
Appearance 120
Mistaken Identity: 120
Embossing 120
Smooth Leather 121
Napped Leather 121
Luster 121
Natural Characteristic (fingerprints) 122
Tone 122
Deck Tag 122
Beyond Cleaning Identification – Color Problem 122
Natural Tanning 122
Sun Fading 122
Color Rubbing Wear 123
Ammonia Finish Damage 123
Headrest Grease Removal Finishes Damages 123
Dye Transfer Stain Removal Finish Damages 123
Beyond Cleaning Identification – Diminishing Fat & Oil 123
Creases and Wrinkles 123
Stiffness 123
Beyond Cleaning Identification – Diminishing Wax Pull-up Effect 123
Beyond Cleaning Identification – Topcoat Damage 123
A Typical Topcoat Wear-off from Aniline Leathers 123
Topcoat Wear 123
Aniline Leather Topcoat Cracking 124
Top Coat Cracking 124
Beyond Cleaning Identification – Structural Damage 124
Structure Over-Stretched 124
Structure Cracking 124
Structure Cat Scratches on Aniline Leathers 124
Worn 124
Structure Holes 124
Beyond Cleaning Identification – Bicast Damages 125
Finish Distortion 125
Finish Stickiness 125
Finish Peeling 125
Structural Rip 125
Finish Test 125
Water Drop Test 125
Scratch Test 125
Stretch Test 125
Tactile-Feel / Touch Test 126
Color Stability Test 126
Trims and Components Identification and Cleaning 126
Combination Finish Types 126
Fabric Component 126
Metal Component 126
Leather Stain Identification, Remover and Procedure 126
Appearance 126
Odor 127
Color 127
Feel of Hand 127
Location 127
Buildup or Absorbed 127
Blood Stain 128
Bleach Stain 128
Protein Based Stain 128
Tannin Based Stain 128
Body Oil, Grease and Sweat Stain 129
Ballpoint Ink 129
Leather Belt Stain 129
Inks 129
Permanent Marker 129
Blue Jean Dye 129
Water Stain 130
Urine Stain 130
Leather Spew Stain 130
Smeared Paint 130
Pain Stain 130
Chapter 15 131
Leather Cleaning Procedure 131
Dry Soil Removal 131
Wet Soil Removal 131
Disclaimer 131
Fundamentals of soil Suspension 132
Chemical Action 132
Temperature 132
Agitation 132
Time 132
Conditioning 133
Drying Process 133
Product Storage & Manufacturer’s Direction 133
Cleaning Code 134
Aniline (A) Cleaning Code 134
Nubuck (N) Cleaning Code 135
Pigmented (P) Cleaning Code 136
Chapter 16 137
Leather Cleaning Procedure - Sub and Other Category 137
Sub-Category Cleaning Code Procedure 137
Aniline - Auto (A.a) 137
Aniline - Waxy-Matte (A.m) 137
Aniline - Pure (A.p) 138
Aniline - Pull-Up Oil (A.o) 138
Aniline - Pull-Up Wax (A.w) 138
Nubuck - Pull-Up Oil (N.o) 139
Nubuck - Pull-Up Wax (N.w) 139
Pigmented - Auto (P.a) 139
Pigmented - Perforated (P.p) 140
Pigmented - Micro / Semi-aniline (P.m) 140
Pigmented - Nappalan (P.n) 140
Pigmented - Antiquing (P.q) 141
Pigmented - Two-Tone (P.t) 141
Other Category Cleaning Code Procedure 142
Bicast (B) 142
Fur (F) 142
Hair-on-Hide (H) 142
Fluorescent (E.f) 143
Metallic (E.m) 143
Pearlescent (E.p) 144
Suede Faux (S.f) 144
Suede Napa (S.n) 144
Suede Split (S.s) 144
Simulated Leather (L.s) 145
Vachetta (V) 145
Wet-White (W) 145
Chapter 17 146
Leather Repairs & Auxiliaries 146
Leather Repairs 146
Finishes Stripper 146
Impregnator 146
Leather Bond 146
Leather Stucco 146
Leather Auxiliaries 146
Adhesor 146
Thickener 147
Duller 147
Crosslinker 147
Chapter 18 148
Leather Finish Problem Identification, Product and Procedure 148
Aniline Dyestuff 148
Dye Fix 149
Pigment Color 149
Hybrid Dyestuff 149
Topcoat 150
Chapter 19 151
Hair-on-Hide Care Procedure 151
Degreaser 151
Cleaner 151
Rinse 151
Mothproofing 151
Chapter20 152
Fur Care 152
Cleaner and Sheen Conditioner 152
Cleaner and Deodorizer 152
Chapter21 153
Leather Problem Solving Guide 153
Leather Problem Solving Guide: Aniline (A) 154
Leather Problem Solving Guide: Nubuck (N) 155
Leather Problem Solving Guide: Pigmented (P) 156
Leather Problem Solving Guide: Aniline-Auto (A.a) 157
Leather Problem Solving Guide: Aniline-Waxy Matte (A.m) 158
Leather Problem Solving Guide: Aniline-Pure (A.p) 159
Leather Problem Solving Guide: Aniline - Pull-Up Oil (A.o) 160
Leather Problem Solving Guide: Aniline - Pull-Up Wax (A.w) 161
Leather Problem Solving Guide: Nubuck - Pull-Up Oil (N.o) 162
Leather Problem Solving Guide: Nubuck: Pull-Up Wax (N.w) 163
Leather Problem Solving Guide: Pigmented - Auto (P.a) 164
Leather Problem Solving Guide: Pigmented: Perforated (P.p) 165
Leather Problem Solving Guide: Pigmented -Semi-Aniline (P.m) 166
Leather Problem Solving Guide: Pigmented: Nappalan (P.n) 167
Leather Problem Solving Guide: Antiquing (P.q) 168
Leather Problem Solving Guide: Two-Tone (P.t) 169
Leather Problem Solving Guide: Bicast (B) 170
Leather Problem Solving Guide: Fur (F) 171
Leather Problem Solving Guide: Hair-on-Hide (H) 172
Leather Problem Solving Guide: Fluorescent (E.f) 173
Leather Problem Solving Guide: Metallic (E.m) 174
Leather Problem Solving Guide: Pearlescent (E.p) 175
Leather Problem Solving Guide: Suede Faux (S.f) 176
Leather Problem Solving Guide: Suede Napa (S.n) 177
Leather Problem Solving Guide: Suede Split (S.s) 178
Leather Problem Solving Guide: Simulated Leather (L.s) 179
Leather Problem Solving Guide: Vachetta (V) 180
Leather Problem Solving Guide: Wet-White (W) 181
Chapter 22 182
Glossary 182
Commonly use Industry Terms and Definitions 182

Quote:

---

Originally Posted by key of restoration

what is the cost and time for private training ?

---

7 days Custom Private Training in Singapore will cost $9600/-, excluding airfares, accommodation and training materials.
You may split the cost with other interested parties.

Email me for more details.

Roger
[email protected]

Quote:

---

Originally Posted by key of restoration

At the moment i have a furniture company which sell leather sofa from ITAIY request me to become they're warranty agent for repairing accident stain ,accident damage and do you advice me to take the challenge using your product ?

---

Yes!
With actual hand-on training we can show the sample result for accident stains and damages like scratches, cuts, abrasion and tears including leather shrinkage from heat damage.

And every delivery has the potential of physical damages especially to Wax Pull-Up leathers.

It is important to realize that all repairs and stains removal has to return the leather back to its original finishes and this is where the Leather Problem Solving Guide according to finishes type comes handy.

Roger
www.LeatherDoctor.com

Attachment 1672

Hi roger I have cleaned up the previous colour , wish to get back to the closer colour which I think glossy finishing . It will be very grateful if you can prepare a kit for me thank.

A glossy finishing may be accomplished with a gloss topcoat either MicroTop-54G or a heavy PigTop-64G.

You may pick your choice from this link: http://www.leatherdoctor.com/servlet...-dsh-54/Detail

Or

http://www.leatherdoctor.com/servlet...-dsh-64/Detail

A two-tone translucent coloring effect can be selected from this link:
http://www.leatherdoctor.com/servlet...-dsh-37/Detail

As the original is a fashion effect created with the grain having a darker shade and the grooves having a lighter shade on a flat surface. Redoing on a three dimension may pose more difficulties.

The secondary color using 2-Tone-37 may be off the original as application technique differs.

Roger Koh
Leather Care Consultant

I choose the microtop-54G for finishing .

The customer still prefer lighter blue without two-tone effect if there is no choice . I hardly understand the above two links which you mentioned...

Be grateful you can advice me a kit that come with blue and white color that I can mix to the nearest .

Thanks Roger.


Best Regards
Gary

Kit Sa7.cl is the semi-aniline leather color refinishing kit.

If you are spraying by airbrushing Thickener-48 will help in the flow control (to reduce dripping from vertical panel).

For your ready for refinishing the procedural steps are as follows:

1] Adhesor-73
2] Custom Blue (a mix of blue (three choices) and white (for spraying add 5 to 10% of Thickener-48 for flow control).
3] MicroTop-54G
4] Protector-B+

Note that there are 3 blues to choose from – blue, marine-blue and Thalo-blue.

Your order option:

1] Kit Sa7.cl
2] Add 2 extra blue – marine and Thalo.
3] Add Thickener-48
4] Add refills in 250ml where necessary to the Kit Sa7.cl

You may pick your product selection from the advance search (just key in the products name and you order from there:
http://www.leatherdoctor.com/servlet/StoreFront


Leather Doctor Thickener-48

Attachment 1678
Leather Doctor® Thickener-48 is an auxiliary waterbased thickening agent to stabilize color during spraying. It is to adjust the flow of color to improve hold-up especially on vertical panels and antiquing two-tone fashion leathers. It is highly effective and maintains the viscosity over the period of use.


Attachment 1679
Leather Doctor Kit Sa7.cl – Semi-Aniline Leather Color Refinishing Kit
Leather Doctor® Kit Sa7.cl, micro-pigmented leather color refinishing kit is design for a holistic restoration approach to not only the finishes but also rejuvenating the leather for suppleness. Most of these repairs may range from missing finishes to abrading damages into the leather structure. Some expose areas may be contaminated with foreign soiling that includes conditioners, protectors, body oil, grease and sweat or alkaline overexposure from cleaners. A comprehensive repair for a long-term lasting solution will require a holistic approach to deal with both the exposed structure and surface finishes. The practical and functional softness and strength of the leather depends on the health of the structure with average thickness between 0.9 to 1.2mm from stiffness and cracking. The aesthetic aspect of the leather finishes averages 0.02mm (or 20 micron) in thickness for practical compressing and flexing from cracking. A leather-safe restoration system begins by stripping with Stripper-2.3 and rinsing with Rinse-3.0. Degreasing with Degreaser-2.2 follows with Acidifier-2.0. The suffix numbers of these four products denotes it pH value for recharging the protein fiber ionic positive besides the act of decontamination. The leather integrity is revitalizes once the ionic attraction between the positive protein fiber and its negative leather constituents like the tanning agent and fatliquor (fat, oil and water) is initiated. Leather rejuvenating system for softness and strength is accomplishes with Hydrator-3.3 follows with Fatliquor-5.0. Surface uneven absorption is seals with Adhesor-73 to reduce the need for color over-coating thus increase its flexibility and stretchability from premature cracking. Protector-B+ imparts a non-stick rub-resistant surface with a buttery feel, reduces noises that translate into less friction wear. As the leather surface is well lubricated it reduces compression when comes to heavy body contact thus reduces compressed creases and wrinkles.


Leather Doctor Micro-54

Attachment 1680
Leather Doctor® Micro-54 is design for micro pigmented leathers also known as semi-aniline. This is a waterbased compact resin blend high performance UV fade resistant pigment color coat.

MicroTop-54 is the matching sealing topcoat in this pigment series system.

Sixteen (16) standard colors are available for direct application or mix to match to produce a secondary or tertiary color.

Attachment 1688Attachment 1689

Hi, Sir Roger just a quick review the above pic . I make a guest for the white spot is it call protein stain.

Thank Roger for you sharing

These are probably the remnants of your stripping off the secondary coating.

Comparing your picture from post #1 above

>>>" This is after I do a cleaning using leather cleaner and the color came out .as you can see the lighter color is my work I have mix and match. This is what I say two tone after I done the finishing the color change."

Using leather Eraser-4 with Stripper-2.3 may perform a better result.

Roger Koh
Leather Care Consultant
www.LeatherDoctor.com