What M.R. Mold & Engineering does

M.R. Mold & Engineering Corp. is a privately held custom mold manufacturer founded in 1985 by Rick Finnie and headquartered in a 23,000+ sq ft facility in Brea, California. The company designs and manufactures liquid silicone rubber (LSR), gum stock silicone, plastic injection, micro, overmolding, and insert molds for OEM customers, with documented strength in complex geometries, tight tolerances, and biocompatible materials for medical applications. Its technical differentiation rests on a portfolio of in-house developed proprietary components — cold runner systems (available in 1 to 16-drop configurations), pneumatic stuffer boxes, universal mold bases, valve-gated controllers, and silicone vacuum seals — supplemented by in-house tool design, Moldex3D polymer simulation, Direct Metal Laser Sintering, a 5-axis YASDA/WorkPal automated manufacturing cell, and a Tech Center housing six company-owned ENGEL and Arburg molding machines used for mold qualification and short-run production.

The firm sells primarily through a consultative direct enterprise sales model requiring 2D drawings, 3D models, annual volume, material, and secondary-operation specifications before RFQ. Lead times run 14–16 weeks including Tech Center sampling. Customer mix is anchored in medical device OEMs (primary), with diversification into dental, aerospace/defense (post-2022 acquisition and ISO 9001-2015), automotive, and consumer products. The firm also sells proprietary molding accessories as standalone catalog products to other mold builders, creating a secondary revenue stream and industry reach.

M.R. Mold is founder-owned (Rick Finnie, President), employs 30+ craftsmen (18-year average tenure, 150 combined years of management experience), is ISO 9001-2015 certified, and has grown from one employee in 1,500 sq ft to its current footprint without disclosed external funding. It has received AMBA's Mold Builder of the Year (2019) and Educational Outreach awards, operates educational partnerships with Cal Poly Pomona and Brea-area schools, and actively co-exhibits molds on partner equipment (ENGEL, Arburg, ShinEtsu, Momentive, Milacron, Shibaura, Sumitomo DeMag, Boy Machines, Zeiger) at MD&M West, PTXPO, NPE 2024, and the LSR Conference.

Name

M.R. Mold & Engineering

Legal name

M.R. Mold & Engineering Corp.

Website

https://mrmold.com

Company type

Private

Founded year

1985

Operating status

Operating

Headcount range

11–50 employees

Short description

M.R. Mold & Engineering is a Brea, California-based custom mold manufacturer founded in 1985 that designs and builds liquid silicone rubber (LSR), plastic, micro, overmolding, and insert molds, primarily for medical device OEMs, using proprietary cold runner systems and an in-house Tech Center for sampling and short-run production.

Ownership category

akta.pro rank

Product category

Custom Injection Mold Manufacturing

NAICS

Industrial Mold Manufacturing (333511), Plastics Product Manufacturing (3261), Plastics and Rubber Products Manufacturing (326), Other Rubber Product Manufacturing (32629)

SIC

Plastics Products, Nec (3089), Miscellaneous Plastics Products (3080), Fabricated Rubber Products, Nec (3060)

akta.pro primary industry

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

akta.pro secondary industries

Medical & Life Sciences Injection Molding (Devices, Diagnostics, Cleanroom) (IMANAFAC), Molded & Extruded Industrial Rubber Parts (Custom Components) (IMANALAG)

Keywords

• Custom injection molds
• Liquid silicone rubber molds
• Plastic injection tooling
• Micro injection molds
• Medical device molds

Headquarters

HQ city

Brea

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Infrastructure, Operations, Personnel, Marketing or Sales

Revenue model

1. Custom Mold Manufacturing: Design and manufacture of custom liquid silicone rubber (LSR) and plastic injection molds for OEM customers. Lead time of 14-16 weeks including mold evaluation and sampling. Molds are validated and sampled in-house before shipment. Revenue is project-based with each mold being a custom order.
2. Molding Accessories and Proprietary Products: Sale of proprietary molding accessories including cold runner systems, pneumatic stuffer boxes, universal bases, vacuum seals, end-of-arm tooling, and robotics. Sold as standalone products to other mold builders and molding operations.
3. Tech Center Services (Sampling and Short-Run Production): In-house Tech Center with six company-owned molding machines (ENGEL and Arburg presses, 55-110 ton) used for mold qualification, sampling, and short-run production. Supports turn-key solutions for customers.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels9 records

Core offering

M.R. Mold & Engineering designs and manufactures custom liquid silicone rubber (LSR), gum stock silicone, and plastic injection molds for OEM customers, specializing in complex geometries and tight tolerances. The company also produces proprietary molding accessories such as cold runner systems, pneumatic stuffer boxes, universal bases, and end-of-arm tooling, and provides in-house Tech Center services for mold sampling, qualification, and short-run production.

Product overview

M.R. Mold & Engineering is a single-site custom mold manufacturer offering a portfolio of five core mold products and seven proprietary accessory/add-on products, all designed to work together as an integrated tooling system. The core offering consists of Liquid Silicone Rubber (LSR) Molds, Plastic Injection Molds, Micro Molds, Overmolding, and Insert Molds, which are complemented by proprietary accessories including Cold Runner Systems, One-Drop Cold Runner with Universal Base, Pneumatic Stuffer Box, Universal Base, Silicone Vacuum Seal, and End-of-Arm Tooling and Robotics. The company also provides Tech Center services for mold sampling and qualification, and Design & Engineering services including simulation and metal 3D printing. Founded in 1985, the company specializes in tight-tolerance, complex geometry molds primarily for the medical industry, serving additional sectors including dental, aerospace, automotive, and consumer products.

Differentiator

Problem solved

Functional benefit

Products and services

• Liquid Silicone Rubber (LSR) Molds Custom LSR molds featuring complex geometries, multi-cavity designs, and the company's proprietary cold runner system for waste-free molding, manufactured for OEM customers.
• Plastic Injection Molds Custom plastic injection molds including two-plate designs, complex multi-cavity molds with multiple side actions, and specialty tools for TPR/TPE, PFA, and Teflon products, serving OEM customers.
• Micro Molds Precision micro molds for parts weighing less than a gram, including punctal plugs, hearing aid components, and other intricate micro-parts with small geometry features, serving medical device OEMs.
• Overmolding Two-material injection molding combining silicone with silicone, plastic, glass, fabric, or metals to create resilient single-piece products for OEM customers.
• Insert Molds Injection molds that embed metallic or plastic inserts (magnets, screws, pins, clips, rivets) into molded components for combined material properties, serving OEM customers.
• Cold Runner Systems Proprietary cold runner systems for LSR molds in standard and built-to-order patterns for single, 2, 4, 8, and 16 drop configurations with customizable options, sold to mold builders and molding operations.
• One-Drop Cold Runner with Universal Base Prototype-to-production cold runner system on a 10x10 inch universal base with heating zones, thermocouples, and insulation for proving gate locations and fill patterns.
• Pneumatic Stuffer Box Direct material feeding device for short-run and micro-mold production, available in Low-Volume High-Pressure (LVHP27, 27 cubic inches) and High-Volume Low-Pressure (HVLP78, 78 cubic inches) configurations, eliminating need for pumping unit cleanup.
• Universal Base Cost-effective 10x10 inch mold base accommodating 10x10, 8x8, and 6x6 cavity plates, made from RoyAlloy stainless steel with heater box and connector, enabling interchangeable cavity plates for multiple projects.
• Silicone Vacuum Seal Parting line sealing device for silicone and rubber molds in two sizes, featuring tapered body design to prevent pinching and eliminate compression set.
• End-of-Arm Tooling and Robotics Custom single-axis pneumatic integral robots and interchangeable end-of-arm tooling including sweeps, grippers, and knock-outs, used in 75% of molds built.
• Tech Center Services In-house sampling, mold qualification, and short-run production services using six company-owned molding machines (Engel and Arburg presses, 55-110 ton), supporting turn-key solutions for OEM customers.
• Design & Engineering Services Mold design using Pro Engineer, SolidWorks, and AutoCAD with in-house Moldex3D polymer system simulation and Direct Metal Laser Sintering for stainless steel mold components.

Quantifiable outcome

• 75% of EDM work eliminated through 5-axis YASDA with WorkPal pallet system, resulting in shorter lead times and cost savings
• +4 more outcomes

Named customers3 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature11 records

Partnerships

Twelve partnerships are on record, tiered core and minor.

• California Polytechnic University (Cal Poly Pomona)coreStrategic or Co-development Partner · 1 January 2022M.R. Mold partners with Cal Poly Pomona on silicone elastomers technology and fabrication courses (MRToubTraining.com). Rick Finnie serves as an instructor. The company also opens its shop for one day of hands-on 8-hour training. Previously partnered with University of Wisconsin-Milwaukee for annual West Coast courses.
• American Mold Builders Association (AMBA)coreStrategic or Co-development PartnerM.R. Mold is an active member of AMBA. Rick Finnie served on the AMBA Board in the late 1990s to early 2000s and was responsible for creating the California Chapter, serving as president. He has been a member for decades and has received AMBA Educational Outreach Awards and AMMA Grant Awards.
• iWarriors (organized by Progressive Components)minorGTM or Marketing PartneriWarriors mission is to assist severely injured Veterans by providing personalized tablets. M.R. Mold has been a proud sponsor and hosts one of three annual charity golf outings. The 2024 event raised $17,500 for veterans.
• Brea Olinda High School Team 7157 (Robotics)minorStrategic or Co-development PartnerM.R. Mold is a proud partner and supporter of the Brea Olinda High School robotics team. Support includes financial contributions, donations, shop resources, and other assistance to help the team's success and expose students to manufacturing careers.
• The Los Angeles Rubber Group Incorporated (TLARGI)minorStrategic or Co-development PartnerRick Finnie is very involved in TLARGI. The company supports virtual classes and educational activities for TLARGI students. Rick also participates in Career Technical Education (CTE) Advisory Committee for Brea school district.
• Century High School STEAM ProgramminorStrategic or Co-development PartnerRick Finnie sits on the Board for Century High School STEAM program in Santa Ana, providing industry guidance and support for career technical education.
• Laurel Magnet School (Career Exploration Program)minorStrategic or Co-development PartnerM.R. Mold Tech Center manager Brian Geisel partners with Laurel Magnet School (K-6) as part of a Career Exploration program, teaching students about manufacturing careers.
• ENGELcoreStrategic or Co-development PartnerLong-standing partnership with ENGEL. Rick Finnie's first molding machine was an ENGEL in the 1980s. ENGEL was first to jump into LSR business with his former employer. M.R. Mold has 4 ENGEL molding machines (2x e-Victory 120-ton, 100-ton, 55-ton e-Mac). ENGEL recognized M.R. Mold's 35th anniversary and demonstrates molds on ENGEL equipment at trade shows.
• ArburgcoreTechnology or IntegrationM.R. Mold operates 2 Arburg molding machines (Arburg 470 110-ton and Arburg 370 All Rounder 77-ton). Partnership for injection molding equipment. Molds demonstrated at trade shows running on Arburg equipment.
• ShinEtsu SiliconescoreTechnology or IntegrationM.R. Mold collaborated with ShinEtsu at MD&M West, demonstrating molds running ShinEtsu KEG-2001-50 fast curing silicone material on ENGEL equipment. Material partner for LSR projects.
• MomentivecoreTechnology or IntegrationM.R. Mold partnered with Momentive at MD&M West, using Momentive's Silopren SLR 2650 fast curing material for micro molding demonstration on BOY XXS Micro Molding machine.
• Boy MachinescoreTechnology or IntegrationM.R. Mold collaborated with Boy Machines at MD&M West, demonstrating micro molds on BOY XXS Micro Molding injection press.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Accumold: Specializes in micro-molding and injection molds for medical, micro-optics, and micro-fluidics applications. Directly comparable to M.R. Mold's micro-mold product line, which targets sub-gram parts such as punctal plugs and hearing aid components.
• Extreme Tool & Engineering: Custom injection mold manufacturer focused on tight-tolerance, complex tooling for medical, automotive, and consumer industries. Comparable as a custom mold builder with technical specialization similar to M.R. Mold.
• Progressive Components: Manufactures and sells mold components including hot/cold runner systems, date codes, and mold accessories. Directly comparable to M.R. Mold's proprietary cold runner systems, stuffer boxes, universal bases, and vacuum seals. Existing partner through iWarriors.
• Kipe Molds: Custom plastic injection and LSR mold maker, where founder Rick Finnie previously worked and developed his silicone expertise. Comparable as a direct, smaller-shop custom LSR mold builder serving medical and industrial OEMs.
• Plastic Components, Inc. Custom injection mold builder serving automotive, medical, and industrial OEMs with tooling solutions. Comparable business model — project-based custom molds for OEM customers across multiple verticals.
• Mold Craft, Inc. Specialty mold maker focused on high-precision, complex-geometry injection molds including multi-cavity and hot-runner systems. Direct peer to M.R. Mold's complex-geometry LSR and plastic mold offerings.
• Diecraft Companies / Diecraft Rapid Tooling: Provider of precision tooling and rapid mold solutions for plastics and silicone applications. Comparable as a precision mold manufacturer serving similar OEM end markets including medical and industrial.

Broad incumbents

• Arburg: Global manufacturer of injection molding machines including LSR-capable presses. Equipment partner of M.R. Mold with two Arburg presses in the Tech Center; broadly comparable as a much larger incumbent in the same injection molding market.
• ENGEL Holding: Global manufacturer of injection molding machines and integrated molding solutions. Long-standing M.R. Mold equipment partner and reference customer at trade shows; comparable as a broader incumbent in the injection molding ecosystem, though ENGEL is equipment, not a custom mold shop.
• Husky Injection Molding Systems: Global supplier of injection molding equipment, hot runners, molds, and integrated systems. Comparable as a broad incumbent serving the same injection molding ecosystem at much larger scale, with overlapping product breadth in molds and hot runners.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

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Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

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 M.R. Mold & Engineering