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Injection Mold Manufacturer — Nebo, North Carolina

Custom Injection Molds & Tooling

Brown Tool & Mold designs and builds precision injection molds for production programs across automotive, medical, consumer, firearms, agricultural, and industrial markets. ±0.0005" tolerances as standard. Every mold backed by MoldGuard™.

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Injection Molds at a Glance
±0.0005" Standard TolerancePrecision machined to exacting specifications
Up to 750-Ton Press SizeSingle cavity through high-cavitation production molds
NX CAD & Moldex3DEngineering-first design and simulation
Conformal Cooling30–50% cycle time reduction available
MoldGuard™ WarrantyEvery mold covered — domestic or offshore
5–6 Week Lead TimesDomestic mold manufacturing standard
±0.0005" Tolerances
41 Years Experience
MoldGuard™ On Every Mold
Domestic & Offshore Programs
Nebo, North Carolina
Injection Mold Manufacturer

Precision Injection Molds Built to Run

Brown Tool & Mold is a precision injection mold manufacturer and mold maker in Nebo, North Carolina. We engineer and manufacture custom injection molds through a complete mold manufacturing process — covering mold design, CNC machining, EDM, and full mold assembly — for manufacturers requiring consistent part quality, stable cycle performance, and long mold service life.

Every mold program at Brown Tool & Mold begins with a thorough engineering review of part geometry, material requirements, and production volume. This engineering-first approach allows us to design tooling that performs reliably from first shot through millions of production cycles. Standard tolerance is ±0.0005" across all mold components.

Every injection mold we build or source is covered by the BTM MoldGuard™ warranty — a formal written warranty aligned to SPI mold class standards, not a vague promise. Globally sourced molds from China, Vietnam, and Malaysia carry the same warranty terms as domestically built tooling.

±.0005"
Standard Tolerance
CNC machined mold components
750T
Max Press Size
Molds designed up to 750-ton clamp
5–6wk
Lead Times
Domestic mold manufacturing standard
41yrs
Experience
Mold making expertise backing every program
What We Build

Injection Mold Types & Capabilities

Brown Tool & Mold designs and builds all major injection mold types for production programs up to 750-ton press size — from single-cavity prototype tooling to complex high-cavitation production molds.

Single & Multi-Cavity Molds

Single-cavity molds for complex, tight-tolerance, or lower-volume programs. Multi-cavity production molds with balanced runner systems, uniform cooling, and synchronized ejection for high-volume manufacturing.

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Hot Runner & Cold Runner

Hot runner systems eliminate runner scrap and reduce cycle time in high-volume programs. Cold runner tooling for lower-volume applications, frequent color changes, or heat-sensitive materials.

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Unscrewing & Stack Molds

Unscrewing molds for threaded caps, closures, and parts requiring rotational ejection. Stack molds that double output per press shot for high-volume packaging and closure programs.

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Multi-Shot & Overmolding

Multi-shot molds for two-material components — combining rigid and soft materials, different colors, or multiple resins in a single production cycle. Insert overmolding for encapsulating metal, fabric, or other substrates in thermoplastic.

Discuss Your Program

LSR, Rubber & Thermoset

Liquid silicone rubber (LSR) molds for medical and electronics applications. Compression, transfer, and thermoset molds for high-temperature industrial and automotive applications.

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Cap & Closure, Medical & Specialty

High-cavitation cap and closure molds. Stainless steel medical molds for ISO Class 7/8 clean room production. Blow molds, extrusion dies, and prototype tooling.

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Complete Injection Mold Type Reference

  • Single-cavity injection molds — production tooling for low-to-mid volume programs
  • Multi-cavity injection molds — high-cavitation production with balanced hot runner systems
  • Hot runner molds — heated manifold systems eliminating runner waste
  • Cold runner molds — for frequent color changes and material-sensitive applications
  • Unscrewing molds — threaded caps, closures, and rotational ejection parts
  • Stack molds — two-level tooling doubling output per press shot
  • Gas-assist molds — hollow and thick-section parts with weight reduction
  • Multi-shot molds — overmolding and two-material components
  • Insert overmolding molds — metal, fabric, or insert encapsulation
  • LSR molds — liquid silicone rubber for medical and electronics
  • Compression molds — thermoset and rubber compression processing
  • Transfer molds — thermoset and rubber transfer from pot to cavities
  • Thermoset molds — high-temperature automotive and industrial applications
  • Rubber molds — seals, gaskets, grommets, and industrial components
  • Cap and closure molds — high-cavitation packaging tooling
  • Medical molds — stainless steel, Class A finish, ISO 7/8 clean room compatible
  • Blow molds — hollow plastic containers and parts
  • Prototype and bridge tooling — design validation and pre-production sampling
  • Extrusion dies — continuous profile extrusion applications
Cooling Design & Optimization

Injection Mold Cooling Performance

Cooling time accounts for 60–80% of total injection molding cycle time in most applications — making thermal performance the single biggest lever for improving production efficiency and reducing cost per part. Brown Tool & Mold integrates cooling design into every mold program from the start.

Straight-Drilled Cooling

Traditional cooling using straight drilled waterlines is cost-effective for simpler part geometries and lower-volume programs. Brown Tool & Mold designs straight-drilled circuits for maximum efficiency within the constraints of conventional drilling — optimizing channel placement, diameter, and flow rate to extract heat as evenly as possible from the mold cavity.

For many programs, well-engineered straight-drilled cooling delivers excellent performance at minimal tooling cost. Our engineers evaluate each program individually to determine the right cooling strategy.

Conformal Cooling

For complex part geometry, deep cores, and high-volume programs where cycle time is critical, metal 3D printed conformal cooling inserts deliver cooling channels that follow part geometry — impossible to achieve with conventional drilling.

Conformal cooling brings coolant closer to the mold surface in critical areas, extracts heat more uniformly, and reduces cycle time by 30–50% in many applications. Brown Tool & Mold produces conformal cooling inserts on its Xact Metal XM200G powder bed fusion system. Available on domestic and offshore molds.

Read Our Cooling Design Guide
How We Work

The Injection Mold Manufacturing Process

Every injection mold Brown Tool & Mold builds follows a structured engineering-first process designed to front-load problem solving before steel is cut.

01

Part Review & DFM

Engineering review of your part model for moldability — wall thickness, draft, undercuts, gate placement, and tolerance requirements. Basic DFM analysis included with every quote.

02

Mold Design

Complete 3D mold design in NX CAD — cavity layout, gating, cooling, ejection, and parting line engineering. Moldex3D simulation validates performance before any steel is cut. Learn about our design process.

03

Precision Machining

5-axis CNC machining, sinker EDM, wire EDM, hard milling, grinding, and polishing — all performed at our Nebo, NC machining facility to ±0.0005" standard tolerance.

04

Assembly & Sampling

Mold assembly, fitting, spotting, and first article sampling. Dimensional verification before delivery. Every completed mold is covered under the MoldGuard™ warranty program.

Related Services

Injection Mold Supporting Services

Brown Tool & Mold provides a complete suite of services supporting every injection mold program from design through long-term production support.

Mold Maker

41 years of hands-on injection mold making experience. From single-cavity prototype tooling to complex high-cavitation production molds across every industry.

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Mold Design & DFM

Full 3D mold design in NX CAD with Moldex3D simulation. Basic DFM review included with every quote. Contract mold design for external toolmakers.

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Precision Machining

5-axis CNC, sinker EDM, wire EDM, hard milling, grinding, and polishing. Tolerances to ±0.0002". Aerospace and defense experience.

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Metal 3D Printing

Conformal cooling inserts from the Xact Metal XM200G — 30–50% cycle time reduction. Available on domestic and offshore molds.

View 3D Metal Printing

Global Mold Sourcing

Offshore molds from China, Vietnam, and Malaysia — BTM-managed with 20+ year vendor relationships, pre-shipment Buy-Off, and MoldGuard™ warranty.

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MoldGuard™ Warranty

Every mold BTM builds or sources is backed by MoldGuard™ — a formal written warranty aligned to SPI mold class standards with full lifecycle documentation.

Learn About MoldGuard™
Common Questions

Injection Mold FAQ

What tolerances does Brown Tool & Mold hold?

Standard injection mold manufacturing tolerance at Brown Tool & Mold is ±0.0005" on CNC machined components. Tighter tolerances are achievable through EDM, grinding, and precision fitting. Grinding tolerances to ±0.0002" are achievable on specific features.

What is the maximum press size you design molds for?

Brown Tool & Mold designs and builds injection molds for press sizes up to and including 750-ton clamp force. We also offer custom injection molding through an established manufacturing partner with 60 machines from 8 to 548 tons for mold sampling and production programs.

What mold types can you build?

Brown Tool & Mold builds single and multi-cavity, hot runner, cold runner, unscrewing, stack, gas-assist, multi-shot, insert overmolding, LSR, rubber, thermoset, compression, transfer, cap and closure, medical, blow molds, and extrusion dies. See the full list above.

Do you offer offshore injection molds?

Yes. Brown Tool & Mold offers a fully managed global mold sourcing program from vetted partners in China, Vietnam, and Malaysia. Every globally sourced mold is covered by the same MoldGuard™ warranty as a domestically built tool. Tooling costs can be 2–3x lower even accounting for current tariffs.

What is conformal cooling and do you offer it?

Conformal cooling uses channels that follow part geometry rather than straight drilled lines — reducing cycle time by 30–50% in many applications. Brown Tool & Mold produces conformal cooling inserts on the Xact Metal XM200G metal 3D printer. Available on domestic and offshore molds.

What is the MoldGuard™ warranty?

BTM MoldGuard™ is Brown Tool & Mold's proprietary injection mold warranty program. Every mold BTM builds or sources is covered — domestic or globally sourced — with formal written terms aligned to SPI mold class standards. Learn more about MoldGuard™.

Mold Financing Available

Standard Loan

Down payment plus fixed monthly installments

Deferred Start

No payments during production ramp-up period

Lease-to-Own

Reduced down payment — own the mold at end of term

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Ready to Build Your Injection Mold?

Send us your part files and production requirements. Our engineering team will review your design, perform a basic DFM analysis, and provide a detailed injection mold quote with lead time.

Nebo, North Carolina
(937) 620-4261
±0.0005" Standard Tolerance
MoldGuard™ On Every Mold
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Brown Tool and Mold — The Mold Maker — Nebo NC

“Brown Tool & Mold is a custom injection mold manufacturer and mold maker in Nebo, North Carolina.”

Brown Tool & Mold LLC. BBB accredited business profile

Brown Tool & Mold
BBB accredited business profile

BBB RATING: A-

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OPENING HOURS

  • Monday - Friday:
  • 7 AM - 4:30 PM
  • Saturday:
  • 7 am - 11 am

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