COMBAT FOOTWEAR OEM/ODM & TOOLING MANUAL

2D Vector & Cross-Sectional Engineering

Client provides tech pack or reference sample. Our mold engineers calculate tread draft angles (minimum 7° for clean gum rubber mold release) and specify rubber compound hardness (Shore A 58±2).

3D CAD Modeling & SLA Resin Printing

Construct 3D CAD files (.STP/.IGS format). Print 1:1 scale SLA photopolymer sole prototypes within 48 hours for tactile inspection of tread depth, arch cavity, and last alignment.

Wood Model & Shrinkage Calibration

Precision CNC wooden models are carved. Precise rubber shrinkage compensations (1.8% to 2.2% thermal contraction during sulfur vulcanization) are calculated into the master pattern.

CNC Steel / Aluminum Mold Tooling

Multi-cavity steel molds for compression molding or aircraft-grade 7075 aluminum molds for injection are cut via 5-axis CNC machines, ensuring crisp siping grooves and debossed logos.

Trial Outsole Injection & Lab Auditorías

First-article sole shots are pressed. Outsoles undergo destructive physical lab verification: Shore A durometer hardness check, SATRA TM133 cold flex testing, and bonding peel adhesion.

Full Pre-Production Sample (PPS) Sign-Off

Complete finished footwear samples are lasted and cemented. Samples are couriered via DHL Express for customer wear-testing approval prior to authorization of mass cutting and lasting.

Tooling Type	Initial Mold Cost	Refund Mechanism	100% Refund Target
Suela Dividida Outsole (2-Piece Gum Rubber)	$2,800 – $3,200	$1.00 / pair deduction on each invoice	3,000 Pairs Cumulative
Suela Corrida Outsole (1-Piece Wrap + TPU Shank)	$3,200 – $3,800	$1.00 / pair deduction on each invoice	3,500 Pairs Cumulative
Weightlifting TPU Wedge Heel Mold	$3,500 – $4,200	$1.00 / pair deduction on each invoice	4,000 Pairs Cumulative

Zero-Tooling Option: Brands launching with our open-mold SD-002 lasts incur $0.00 in tooling costs, requiring only upper personalization and private branding from 300 pairs.

How does the Outsole Tooling Fee Amortization Refund policy work?

Initial mold tooling for a full size run costs between $2,800 and $4,200. We refund $1.00 to $1.50 per pair produced on every reorder until 100% of the mold investment is refunded (typically reaching complete amortization at 3,000 to 4,000 pairs cumulative volume).

What is the step-by-step SOP for developing a new outsole mold?

Our 6-step SOP proceeds: 1) 2D concept rendering; 2) 3D CAD sole engineering & 48-hour SLA resin printing; 3) Wooden model validation & casting shrinkage verification; 4) CNC aluminum/steel mold cutting (15-20 days); 5) Trial injection sample testing (hardness & flex); 6) Mass production sign-off.

Can we develop custom shoe lasts tailored to our brand's ergonomic fit?

Yes. We maintain CNC last carving machines and in-house digital last modeling. We can engineer anatomical lasts optimized for wide toe boxes, high arches, or youth growth metrics across US Men 7–15 and US Kids 1–6.

How do you protect intellectual property and design confidentiality?

We sign binding bilateral Non-Disclosure Agreements (NDAs) prior to receiving proprietary tech packs. All custom sole molds and shoe lasts are stamped with tamper-proof client asset tags and are strictly prohibited from being shared or produced for third parties.

Fast Engineering Quotation

Request Factory Direct Specification & Sample Quote

Direct response from Jinjiang engineering desk within 8 hours. PPS samples dispatched in 7–10 days.