[Production] Dior 2025SS Messenger Flap Bag (In Progress)

Apr 13, 2026 StrangeKrist

Deconstruction is a wrap. Moving into production.

It’s a long-form post. The complete journey is split into:

Deconstruction → Production → Finished Product Showcase & Comparison.

Copper Electrodes

Hardware molds consist of multiple modules. Each module requires a specific copper electrode. These electrodes use EDM (Electrical Discharge Machining) to carve the final steel molds.

Shown here is the copper electrode for the branding/font mold.

Side-Release Buckle

Rough Blank (Data Testing / Pre-Finishing)
Material: Aluminum

⚠️ PS (Production Knowledge):

Precision: The data was captured via 3D laser scanning and verified with calipers. The measurements are 1:1 accurate.
Allowance: The rough blank must include a "polishing allowance" to account for material loss during the smoothing process.
Detail: At this stage, before polishing, the bevels and chamfers have not yet been formed.

Male Component
Material: Aluminum

Female Component
Material: Aluminum

Weight Test: Male Component

Since the copper buttons for the ZP (Retail) female component haven't been fully extracted yet, we are using the male component for the weight comparison.

Result: Our male component weighs exactly 10g.
This proves the material density is identical.

⚠️ Warning: Some versions on the market use zinc alloy. The weight and tactile "hand-feel" are completely different from the correct aluminum construction.

Strap Slider Crossbar
Rough Blank
Material: Copper

Side Tab D-Rings, Square Buckles, and Sliders
Rough Blanks
Material: Zinc Alloy (Matches ZP (Retail))
Branding: Mold-integrated engraving (Matches ZP (Retail))

Side Tab D-Rings

Square Buckles

Sliders

Main Label & Code Tags
Heat Stamping Test (Using scrap leather for calibration)

Code Tags

Main Label

⚠️ The Science of "Gold Overflow" in Heat Stamping
(A vital authentication trait: All luxury brands exhibit this "overflow" effect.)

⚠️ As marked in the photos:

Gold Overflow: Any brand using traditional techniques and real gold leaf foil will have gold overflow. Conversely, the "cleaner" and more perfect the stamp looks, the more likely it is a fake.
Authentic Mold Imprint: Real stamps show obvious "hand-made" characteristics. Rigid, computer-perfect fonts are a sign of a cheap FK.

The Logic:
The overflow is caused by the foil’s composition. Most factory-grade foil is plastic-based.

⚠️ ZP (Retail) uses foil containing real gold/silver mixtures. Under high heat and pressure, these metallic particles adhere to the edges of the character beyond the recessed area. This "bleed" may rub off slightly during use, but the core imprint remains.

The Cost Gap:

Imported Gold Leaf Foil (Retail Standard): ~1,000 RMB per roll.
Standard Plastic Foil (Market FKs): ~20 RMB per roll.

Some sellers describe this overflow as "poor quality from retail" and claim they "fixed" it. In reality, they are just saving costs or can't source the real foil. Plastic foil never produces this authentic bleed.

Leather: Italian GR Tannery
Top-Grain Pebbled Calfskin

Bulk Material

Note: Dior’s current leather has shifted—it is now more matte with a flatter, more even grain texture compared to previous years.

ZP (Retail) Oblique Canvas

Bulk Material

⚠️ How to Authenticate ZP (Retail) Oblique:

Feature 1: The Lockstitch
High-end factory fabric features a unique overlock (locking edge). The thread used for the lockstitch is always a contrasting color (different from the fabric's main thread).

Feature 2: The Twill Angle
At a tilted angle, the diagonal twill texture is visible. Looking at it vertically, the twill disappears.

Feature 3: Randomized "Three Grey Lines"
On ZP (Retail) fabric, the arrangement of the three grey lines within the "D" is randomly shifted to the left or right.
⚠️ FK Fabric: The lines are uniform and identical across all characters.

As shown in the samples from my batch and my ZP (Retail) roll, the lines are correctly randomized.

Internal Lining
Bulk Material

Since it's impossible to buy the official lining directly, I developed this from scratch. Therefore, it uses a standard lockstitch.
(On a full retail roll, the lockstitch would be a unique design with contrasting thread).

Construction: The lining is a bonded material consisting of a face fabric and a backing layer.

Face fabric

Backing layer

First Prototype
Paper pattern testing.

The Buckle: Finishing Process

⚠️ Technology Shift: Dior has changed their process. Older buckles used electrophoresis; current models use Baked Paint (Powder Coating).

⚠️ The "Shrinkage Ripples" (Only found in baked finishes):
The Principle:

The paint starts as dust particles, not a liquid.
The powder is sprayed onto the part and baked at high temperatures to melt and cover the surface.
During baking, the particles shrink before they melt, creating these specific shrinkage ripples (orange-peel effect).