Custom Manufacturing and Engineering

What Custom Manufacturing and Engineering does

Custom Manufacturing and Engineering, Inc. (CME) is a privately held, founder-owned custom plastic injection molding and contract manufacturer founded in 1981 by Lloyd McKinney and headquartered in Lino Lakes, Minnesota. The company operates a single facility built in 1988 with a 1991 addition, runs an 11–50 person team, and serves B2B customers — primarily in the medical device industry, with secondary exposure to general manufacturing, consumer products, automotive, and industrial applications. Two named enterprise customers appear in disclosures: Gel-Pak (recipient of CME's services and a Supplier Excellence Award giver) and a local medical device manufacturer.

CME's core technical offering spans four molding modalities — thermoplastic injection molding (28–550 ton presses, 1.5–80 oz shot sizes), insert molding, structural foam molding, and liquid silicone injection molding (LSI/LSR) — supported by in-house design and engineering (Solidworks 3D CAD modeling, Mastercam CNC programming, DFM analysis), prototyping via on-site SLA and SLS 3D printing, and custom mold/tooling fabrication from single-cavity prototypes to multi-cavity production molds. The company also provides ten secondary operations (assembly, hot stamping, sonic welding, pad printing, painting/EFI shielding, swedging, heat staking, vacuum metalizing, blister packing, CNC machining) and wraps production with flexible fulfillment: JIT warehousing, safety stock programs with automated inventory alerts, and extended warehousing with Economic Order Quantity (EOQ) and annual blanket order options.

The business model is a consultative, quote-based B2B sales motion conducted through the company website (custommfg.com), direct phone contact, and online quote request forms that require tooling status, material specs, estimated annual usage, and CAD files. Pricing is fully custom per project with no public rate cards, and engagements are described as multi-year contracts. Revenue, funding, and headcount trends are not publicly disclosed. The company holds no known certifications or external equity, owns one patent-pending product (Deer Dripper), and has no mobile app, public API, or disclosed AI/ML capabilities.

Name

Custom Manufacturing and Engineering

Legal name

Custom Manufacturing & Engineering, Inc.

Website

https://custommfg.com

Company type

Private

Founded year

1981

Operating status

Operating

Headcount range

11–50 employees

Short description

Custom Manufacturing and Engineering is a privately held, founder-owned custom plastic injection molding and contract manufacturer in Lino Lakes, Minnesota, serving primarily medical device and general manufacturing B2B customers with design, prototyping, tooling, molding, secondary operations, and fulfillment services.

Ownership category

akta.pro rank

Product category

Custom Plastic Injection Molding

NAICS

Plastics Product Manufacturing (3261)

SIC

Plastics Products, Nec (3089)

akta.pro primary industry

Custom Injection Molding & Contract Manufacturing (Job Shops/CMs) (IMANAFAJ)

akta.pro secondary industry

Additive Manufacturing (3D Printing of Plastics) (IMANAOAO)

Keywords

• Custom plastic injection molding
• Contract manufacturing services
• Medical device plastics
• Plastic prototyping tooling
• Liquid silicone molding

Headquarters

HQ city

Anoka

HQ country

United States

HQ region

North America

Offices1 record

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 Injection Molding Manufacturing: Revenue generated from custom plastic injection molding services including thermoplastic injection molding, insert molding, structural foam molding, and liquid silicone injection. Customers receive comprehensive manufacturing from design through delivery including tooling, prototyping, secondary operations, and fulfillment services.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Custom Manufacturing and Engineering is a full-service custom plastic injection molding and contract manufacturer providing designing, engineering, prototyping, tooling, production molding, secondary operations, and fulfillment for plastic components. Core production processes include thermoplastic injection molding (28-550 ton presses), insert molding, structural foam molding, and liquid silicone injection molding (LSI/LSR), with in-house 3D printing prototyping and CNC machining. The company delivers a design-to-delivery single-supplier solution, primarily serving medical device and general industrial customers with quote-based, multi-year project contracts.

Product overview

Custom Manufacturing and Engineering is a full-service plastic injection molding and contract manufacturing company offering an integrated portfolio of services from design through delivery. The core product offerings include thermoplastic injection molding (28-550 ton presses), insert molding, structural foam molding, and liquid silicone injection molding (LSI/LSR), all supported by in-house tooling and prototyping capabilities. Secondary operations including assembly, hot stamping, sonic welding, pad printing, painting/EFI shielding, swedging, heat staking, vacuum metalizing, blister packing, and CNC machining add post-molding value. Design and engineering services leverage Solidworks for CAD modeling and Mastercam for CNC programming. Fulfillment services round out the offering with JIT warehousing, safety stock programs, and extended warehousing with EOQ options. The company serves customers from prototyping through production, providing a streamlined experience from initial design to finished product delivery.

Differentiator

Problem solved

Functional benefit

Products and services

• Thermoplastic Injection Molding Primary injection molding service using thermoplastic materials, with presses ranging from 28 to 550 tons and shot sizes from 1.5 oz to 80 oz. Includes auto unscrew capability and threading, and is targeted at industrial customers needing custom plastic components at varying volumes.
• Insert Molding
• Structural Foam Molding
• Liquid Silicone Injection Molding (LSI/LSR)
• Design & Engineering Services
• Prototyping Services
• Tooling Services
• Quality Assurance Services
• JIT Warehousing
• Safety Stock Program
• Extended Warehousing

Quantifiable outcome

• Zero-defect delivery objective

Named customers2 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Gel-PakcoreStrategic or Co-development PartnerGel-Pak awarded Custom Manufacturing & Engineering their Supplier Excellence Award, recognizing CME as a significant contributor to their success. This indicates a strong ongoing supplier relationship where CME provides custom manufacturing services to Gel-Pak.

Scale indicators3 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Protolabs: Protolabs is a digital-native custom injection molding and prototyping company serving medical and industrial customers. While CME competes on traditional production runs and consultative service, both occupy the same custom plastic injection molding space with overlapping customer profiles in medical devices and general manufacturing.
• GW Plastics: GW Plastics is a precision custom injection molder specializing in medical devices and drug-delivery systems with multiple U.S. and global facilities. It competes with CME directly for medical molding programs but at significantly greater scale, offering cleanroom molding and global supply chain capabilities.
• Mack Molding: Mack Molding is a U.S.-based custom plastic injection molder and contract manufacturer offering molding, assembly, and fulfillment services. It competes in the same mid-market contract manufacturing space as CME, with similar vertical focus on medical and industrial customers.
• EVCO Plastics: EVCO Plastics is a custom injection molding contract manufacturer serving medical, industrial, and consumer markets from multiple U.S. facilities. It competes with CME for the same B2B custom molding work but with broader geographic reach and larger press capacity.
• Stack Plastics: Stack Plastics is a precision custom injection molder focused on medical, biotech, and industrial customers. It offers thermoplastic and LSR molding capabilities similar to CME's, serving as a direct competitor in the medical contract molding segment.
• Baytech Plastics: Baytech Plastics is a custom injection molding company offering design, tooling, molding, and assembly services with medical and industrial customers. It mirrors CME's full-service model and competes for similar quote-based contract molding engagements.
• Crescent Industries: Crescent Industries is a custom injection molder specializing in insert molding, overmolding, and LSR molding — directly overlapping with CME's specialty molding capabilities, particularly for medical and industrial customers with insert and silicone requirements.
• Noble Plastics: Noble Plastics is a custom injection molding shop offering thermoplastic and LSR molding with secondary operations and fulfillment services. It competes with CME in similar mid-market contract molding engagements for medical and industrial customers.
• Plastic Molded Concepts (PMC): Plastic Molded Concepts is a custom injection molder serving medical, defense, and industrial customers with design, tooling, and secondary services. It competes with CME for similar full-service contract manufacturing engagements, particularly in regulated markets.
• Roddin Group (Rodon): Rodon Group is a high-volume custom injection molder with in-house tooling capabilities serving consumer, industrial, and medical customers. It is comparable to CME as a custom injection molding job shop but operates at significantly greater scale and volume.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/custom-manufacturing-and-engineering-inc.

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 Custom Manufacturing and Engineering