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Leather Doctor






0.040 KGS
Calculated at checkout

Product Description

Leather Doctor Bond-3D is for leather structure bonding repairs, such as abrasion, cat-scratch, and filling repairs with Stucco-90, Micro-54, Anline-76 and Aniline-21. This water-based medium soft polyurethane leather bond will not lift the leather finishes unlike other dry solvent-based glue. Works in conjunction with leather Patch-4S as sub patch and suede fibers as fillers. Excess clean up when dry will require the help of Bond-7A to smooth without the need of sanding.



Bond-5C a medium soft acrylic resin when mixed with equal portion with Bond-3D provides a tackier mixed for easier control application with added strength for a stronger bond.


1 Colors and dyes can be added for aesthetic repairs.

2 Test for darkening effect when dry, prior to repair.

3 Use leather Patch-4S as sub-patch to bond.

4 Use suede fibers for filling repairs for aniline leathers.

5 Use Stucco-90 for filling repairs for pigmented leathers.

6 Use leather Bond-7A to smooth abrasion repairs without the need to sanding.

Types of Repairs using Bond-3D:

A. Cut Through Repairs.

B. New, Fresh and Clean Accident Abrasion Repairs.

C. Prolonged Contaminated Abrasion & Holes Repairs.

D. Hair-on Hide Rip Repair

A. Cut Through Repairs.

A cut through repairs utilize Patch-4S as a sub-patch and this is bonded suede side to suede side.

1 Where tension causes the leather to open, it is stretch to an overlapping position with some physical help.

2 Preferably the Patch-4S is bonded to one side first prior to bonding the other side to reduce the overlapping effort.

3 This is a slow drying product thus a blower may come helpful to speed up the drying process.

4 The bonding process will require the bond to cure for tension strength, thus holding the rip in position until fully cured is necessary.

5 Vertical filling gap may be done with added matching coloring for aesthetic.

B. Fresh and Clean Accident Abrasion Repairs:

Abrasion in most cases will roughen up the leather structure with missing finishes.

1 Any soiling is removed with brushing prior to applying Bond-3D to smooth the damages.

2 Repeat application is necessary to build the smooth skin back gradually.

3 Bond-7A helps to smooth it without the need of sanding.

3 Color matching is done accordingly to the finish types.

C. Prolonged Contaminated Abrasion & Holes Repairs:

Constant abrasion with repeat compression may loosen and weaken the leather structure compound with loss of fibers or missing parts. Repairs to such neglected damages may take on a holistic approach to restore systematically the damages. Degreasing with Degreaser-2.2 is recommended to remove surface and penetrated oil and grease soiling in conjunction with Rinse-3.0 to remove foreign contamination. Leather rejuvenating is also recommended to restore the leather softness and strength with Hydrator-3.3 follows with Fatliquor-5.0. Tightening the leather structure may be necessary to restore over-stretched leather with Impregnator-26. Bonding repair with Bond-3D commence thereafter with smoothening, filling with donor suede fiber especially for aniline leathers or optional Stucco-90 for pigmented leathers. Repair prepares the surface for color refinishing that follows with Adhesor-73, matching coloring and matching topcoat that ends with a rub-resistant protection.

D. Hair-on hide Rip Repairs:

Rip is the result of diminishes fatliquor (ionic charged fat and oil) from ageing or alkaline overexposure. The structure need to be clean, pH balanced and fatliquor replenished up to 15% to supple it prior to repairing, otherwise the stiff hide may tend to crack again when flexed. The repair may be performed with a bonding Patch-4S or with stitching and camouflaging donor suede fibers.

Bond-3D with Patch-4s

1-    A 1” Patch-4s strip is sufficient to bond a rip with approximate 1/2” both sides.

2-    Bond-3D is applied sufficiently to half inch along the rip to penetrate and the 1” Patch-4s is also applied half sufficiently.

3-    The Patch-4s is placed and pressed accordingly.

4-    Let naturally dry with hair drying option before repeating the other half and align accordingly.

5-    Let overnight cure and the hide is ready to flip over to proceed cleaning the hair side.

Bond-3D with Stitching and Donor Fiber.

1-    The hide is cross-stitch with a curve needle to hold the rip together.

2-    Bond-3D is applied about ½” both sides of the rip.

3-    Donor fiber is scraped with Razor-60 from the thicker areas of the hide especially the head and shoulder areas and applied over the  stitching camouflaging it.

4-    The repair is left to natural dry or option drying with hair dryer.

5-    Let overnight cure and the hide is ready to flip over to proceed cleaning the hair side.


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