Norstar Aluminum Molds

What Norstar Aluminum Molds does

Norstar Aluminum Molds, Inc. is a Cedarburg, Wisconsin-based manufacturer of custom aluminum molds for the rotational molding industry, operating continuously since the early 1960s. The company designs, engineers, and builds cast aluminum molds, CNC-machined aluminum molds, fabricated molds, and patterns, and augments these with a productized 'Creative Solutions' portfolio that includes Heat Transfer Technology, AirAide internal air cooling, Freeforms molded-in holes, and Supavents venting products. Production runs across two Cedarburg facilities totaling more than 100,000 square feet, supported by investment in CNC machining centers and aluminum casting capacity. Norstar also operates Rotomart.com, a wholly-owned 24/7 e-commerce platform selling used molds, venting products, mold components, framing and mounting hardware, and production-related supplies to rotational molders worldwide.

The company's customer base is the rotational molding industry, with end-product applications spanning ice chests, toys, playground equipment, kayaks, amusement rides, industrial containers, and custom molded parts. Go-to-market is hybrid: custom mold orders are sold through a direct technical sales engagement on a quote-based, project-by-project basis, while standard supplies and components are fulfilled through the Rotomart e-commerce storefront. Pricing for custom molds is not publicly disclosed and varies with mold complexity, size, and specification.

Norstar is a privately held, independently owned corporation (Wisconsin, USA) with 11-50 employees. The ownership structure is not publicly disclosed, and the company has no disclosed external funding, parent entity, or institutional investors. Its strategic positioning is built on 60+ years of accumulated shop-floor expertise, proprietary mold-design innovations, and the capital intensity of its two-plant manufacturing footprint, which together form the basis of its competitive identity in the niche rotational tooling market.

Name

Norstar Aluminum Molds

Legal name

Norstar Aluminum Molds, Inc.

Website

https://norstarmolds.com

Company type

Private

Founded year

1963

Operating status

Operating

Headcount range

11–50 employees

Short description

Norstar Aluminum Molds designs and manufactures custom cast and CNC-machined aluminum molds, plus proprietary venting and cooling innovations, for the rotational molding industry from two Cedarburg, Wisconsin facilities, and operates the Rotomart.com e-commerce supply platform.

Ownership category

akta.pro rank

Product category

Rotational Mold Tooling

NAICS

Industrial Mold Manufacturing (333511), Aluminum Foundries (except Die-Casting) (331524)

SIC

Nonferrous Foundries (Castings) (3360)

akta.pro primary industry

Aluminum Fabrication & Finishing (Machining, Anodizing, Coating) (IMAKACAI)

Keywords

• Rotational mold tooling
• Aluminum mold manufacturing
• CNC machined molds
• Rotational molding supplies
• Custom industrial molds

Headquarters

HQ city

Cedarburg

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D

Revenue model

1. Custom Aluminum Molds: Design, engineering, and manufacturing of custom cast aluminum molds and CNC machined aluminum molds for the rotational molding industry. This is the primary revenue stream, with molds built to customer specifications for specific applications.
2. Rotomart E-commerce Platform: Online marketplace (Rotomart.com) selling rotational molding supplies including used molds, mold components, venting products, framing/mounting hardware, and production-related products. Revenue generated from product sales through the e-commerce platform.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Norstar Aluminum Molds designs, engineers, and manufactures custom cast and CNC-machined aluminum molds, fabricated molds, and patterns for the rotational molding industry. The company also sells related mold supplies and accessories through its Rotomart.com e-commerce platform, serving rotational molders that produce plastic parts such as tanks, kayaks, playground equipment, and industrial containers.

Product overview

Norstar Aluminum Molds is a manufacturer of aluminum molds for the rotational molding industry with over 60 years of experience. The company operates two manufacturing locations with over 100,000 SF of production space and utilizes both casting and CNC machining technologies. Its core product portfolio centers on four main mold types: Cast Aluminum Molds, Machined Aluminum (CNC) Molds, Fabricated Molds, and Patterns. These are supplemented by creative technology solutions including Heat Transfer Technology, AirAide (Internal Air Cooling), Freeforms (Molded-In Holes), and Venting Products. The company also operates Rotomart (Rotomart.com), a separate online e-commerce platform for rotational molding supplies offering used molds, mold components, framing/mounting hardware, production products, and innovation items.

Differentiator

Problem solved

Functional benefit

Brands

• Rotomart: A 24/7 online rotational molding supply shopping solution offering products specifically designed for rotational molders, including used molds, venting products, mold components, and production-related products.

Products and services

• Cast Aluminum Molds Aluminum molds produced via a casting process for the rotational molding industry, featuring polished surfaces for high-quality mold finishes. Sold to rotational molding manufacturers.
• Machined Aluminum (CNC) Molds CNC-precision machined aluminum molds offering detailed control and large-scale manufacturing capabilities for rotational molding applications. Sold to rotational molding manufacturers.
• Fabricated Molds Custom fabricated molds designed and built to meet specific customer requirements for the rotational molding process. Sold to rotational molding manufacturers.
• Patterns Pattern creation services supporting the mold making process for rotational molding. Sold to rotational molding manufacturers.
• Mold Supplies Supplies and components for mold maintenance and operation. Sold to rotational molding manufacturers.
• Rotomart Online Supply Store 24/7 online store for rotational molding supplies including used molds, mold components, venting products, framing and mounting hardware, production products, and innovation products. Operated as a wholly-owned subsidiary of Norstar.

Quantifiable outcome

• Reduced cycle time for rotational molding operations
• +2 more outcomes

Named customers1 record

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• PCS Company: Supplier of mold components, standard parts, and supplies for plastics injection and rotational molders. Comparable to Norstar/Rotomart in distributing mold components and supplies to the plastics molding industry.
• DME Company: Supplier of standard mold components, mold bases, and supplies for the plastics molding industry. Comparable to Norstar/Rotomart as a provider of mold components and supplies to plastics processors, including moldmakers and rotational molders.
• Tooling Tech Group: Custom manufacturer of tooling, dies, molds, and specialty machines for industrial customers. Comparable to Norstar as a custom metal tooling/mold manufacturer serving industrial OEMs, with CNC machining and fabrication capabilities.
• StackTeck Systems: Designer and manufacturer of high-cavitation molds for plastics packaging and thin-wall applications. Comparable to Norstar as a custom mold manufacturer serving plastics processors, though focused on injection molding.
• Incoe Corporation: Manufacturer of hot runner systems and mold technology for plastics injection molding. Comparable to Norstar as a mold technology supplier to plastics processors, with proprietary system offerings (analogous to Norstar's creative-solutions add-ons).

Broad incumbents

• FRIMO Group: Manufacturer of molds, tools, and machinery for plastics processing including polyurethane and composites. Comparable to Norstar as a custom tool/mold supplier to plastics manufacturers across multiple processes.
• Husky Injection Molding Systems: Global leader in molds, hot runners, and integrated systems for plastics processing. Overlaps with Norstar as an industrial mold manufacturer serving plastics processors, but operates at much larger scale across injection molding rather than rotational molding specialty.
• Mold-Masters: Global supplier of hot runner systems and mold technology for plastics injection molding. Comparable to Norstar as a mold technology specialist serving plastics manufacturers, but focused on hot runners and injection rather than rotational molds.

Emerging players

• UFP Technologies: Custom manufacturer of engineered molded products and specialty packaging using processes including rotational molding. Comparable to Norstar as a custom-molded-products specialist with capabilities overlapping rotational molding applications.
• Omega Plastics: Custom plastics molder and tooling provider for industrial customers. Comparable to Norstar as a smaller specialty plastics/mold manufacturer focused on custom solutions for industrial end markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Norstar Aluminum Molds