3 Dimensional Services - providers of services and equipment for rapid prototyping, laser processing, CNC machining, prototypes by SLA, LOM technology, Rochester Hills, Michigan

3D Proto - service bureau for rapid prototyping, 3D printing, CAD design, SLA, FDM, MJM prototyping technologies, Round Lake, Illinois

3D Technical Service - rapid prototyping, CNC machining, casting services, medical tools like endoscopic trainer, Franklin, Ohio

3GS - provides SLA parts, RTV molds, urethanes for wood modeling, pattern making industry, Taylor, Michigan

Accurate Pattern - services include rapid prototyping, reverse engineering, CNC machining, produce wood, metal, plastic prototypes, also offers inspection services, Butler, Wisconsin

ACTech- produces rapid casting prototypes for automotive, aeronautical industry, investment castings, sand casting technology, operates EOSint S, EOSint P700, Ann Arbor, Michigan 

Ackeret Engineering - industrial design, manufacturing, prototyping services, offers prototypes, mock-ups, Seymour, Indiana

Advanced Design Concepts - service for engineering design, rapid prototyping by CNC milling, injection molding, reverse engineering and tool designing, Pewaukee, Wisconsin

Advanced Prototyping - rapid prototyping, design engineering service provider, offers SLA, SLS prototypes, urethane, aluminum, zinc castings, Rochester Hills, Michigan

Advantage Prototype Systems - product design engineering, plastic molding for manufacturing companies, rapid prototyping, metal casting, urethane casting, Sheboygan Falls, Wisconsin

Advatech - provides rapid prototyping services, SLS prototyping, operates Sinterstation Pro SLS system, ISO 9001:2000, AS9100:B certified, Goodland, Indiana

Aggressive Technologies new - offers services like CNC machining, prototyping, fabrication and more, Loves Park, Illinois

Anza - services in 3D CAD modeling, rapid prototyping, specialized in color correct comps, Cincinnati, Ohio

Aphase II - offers rapid prototyping service, supplies metal, plastic prototypes, also stamping prototypes, mock ups and assemblies, Sterling Heights, Michigan

Applied Laser Technologies - CNC rapid prototyping and laser services for sheet metal manufacturing, ISO 9002 certified, Schofield, Wisconsin

Aristo Cast - rapid prototyping, investment casting service, produce alloy, ABS plastic prototypes, also tooling, machining, gauging services, Almont, Michigan

Asteroid Grinding - services in rapid prototyping, production of machined parts, CNC cylindrical OD grinding, ISO 9001:2000 certified, Des Plaines, Illinois

Auburn Engineering - rapid prototyping services, offers plastic prototypes, metal casts, injection molds, also rapid tooling, Rochester Hills, Michigan

Bastec - reseller for 3D Systems InVision printers, provides rapid tooling, rapid prototyping service, operates DTM SLS-2500 plus Sinterstation, Dayton, Ohio

Brynnage Design - SLA based rapid prototyping, 3D modeling services, operates 3D Systems SLA 5000, Magics software tool, Mishawaka, Indiana

Build FDM - SB of Stratasys Inc, FDM based rapid prototyping services, Minnesota

Butler Tool & Design - provides SLS rapid prototyping service, also tooling, stamping and forming dies, welding fixtures, operates 3D Systems Sinterstation Pro SLS system, Goodland, Indiana

CAD CAM Services - rapid prototyping, reverse engineering services for plastic and sheet metal industries, FDM prototyping technology, operates FDM 1650, Kentwood, Michigan

CAM-LEM - provides rapid prototyping services, offers prototypes for metal, ceramic components, also internally cooled stainless steel tooling, Cleveland, Ohio

C.ideas - ABS prototypes from solid model files, Cary, Illinois

Clinkenbeard - offers services like rapid prototyping, tooling, CNC machining, provides mock-ups for aerospace industry, AS9100 certified, Rockford, Illinois

Conceptual Reality - provides rapid prototyping service, SLA, SLS, FDM prototyping methods, also operates Protomix Casting System by Camattini, Walled Lake, Michigan

Concept Solutions - specialized in product development for forestry, agriculture, construction sectors, services offered in rapid prototyping, reverse engineering, fabrication, sheet metal design, Cedar Rapids, IA

C2R - provides rapid prototyping, product development service, also product testing, reverse engineering, Madison, Wisconsin

Craft Pattern and Mold - rapid prototyping service for plastic and foundry industry, provides plastic, metal prototypes, does SLA, LOM, Maple Plain, Minnesota

Cybernet - provides FDM prototypes using ABS plastic, Ann Arbor, Michigan

Design Dynamics - provides services for industrial design, mechanical design, rapid prototyping, also short run tooling, Hudson, Ohio

Dickten Masch Plastics - offers SLA prototypes, thermoplastic, thermosetting molding, rapid tooling, Ankeny, IA

DRS Industries - services include rapid prototyping, rapid tooling, snap tooling, Stratasys FDM RP method for prototyping, Holland, Ohio

E3 Rapid Prototypes - rapid prototyping services by 3D modeling, finite element testing, metal casting, Cedar Falls, IA

Eagle Design - provides 3D CAD, urethane casting, injection molding, rapid prototyping services, Zeeland, Michigan

Excell - provides rapid prototyping service, prototyping techniques like SLA, FDM, RTV molding, CNC machining, operates SLA 3500, Minneapolis, Minnesota

Express Pattern - offers services for investment casting, rapid prototyping and manufacturing, operates Viper Pro, Thermojet machines, Vernon Hills, Illinois

Five Star Plastics - rapid prototyping, rapid tooling, injection molding service, offers SLA, SLS based plastic prototypes, Eau Claire, Wisconsin

Frantz - rapid prototyping , injection molding, rapid tooling services, plastic prototypes for medical devices, Chagrin Falls, Ohio

Gazelle Prototype - rapid prototyping services by SLS technology, 3D modeling and injection molding, Grand Haven, Michigan

General Pattern - full service provider for rapid prototyping, rapid tooling and manufacturing, prototyping methods like SLS, SLA and CNC machining, Minneapolis, Minnesota

GPI - rapid prototyping, manufacturing services, offers PolyJet 3D printing, SLA, SLS, FDM based prototypes, Lake Bluff, Illinois

Harrington Product Development - services include industrial designing, rapid prototyping, RTV silicone, spray metal tooling, 3D CAD/CAM, Cincinnati, Ohio

Ideas - services like industrial design, rapid prototyping, rapid tooling, injection molding, offers Alias renderings, mock-ups, DOE, turnkey processes, Green, Ohio

IMPM - rapid prototyping service, offers SLA modeling, CNC machining, silicone, epoxy tooling, Rosemont, Illinois

JO-AD - offers SLS based plastic prototypes, molded plastics, CNC machined parts, Madison, Michigan

JTP - rapid prototyping, manufacturing services, operates EOS P700 laser sintering system, Livonia, Michigan

KDA - rapid prototyping, industrial design consultants, also offers mock-ups, beta prototype testing, market research models, Addison, Illinois

Laser Reproductions - service providers for rapid prototyping, tooling, manufacturing, Viper Pro SLA System machine for prototyping, Gahanna, Ohio

Leyshon Miller Industries - specializes in rapid prototyping, solid modeling, tooling, CNC machining for prototyping, QC7 aluminum injection mold tooling, Cambridge, Ohio

Micronics - FDM based rapid prototyping, operates Eden systems for PolyJet technology, Glencoe, Minnesota

Midwest Prototyping - offers SLA prototypes, CNC machining, fabrication, Blue Mounds, Wisconsin

Mikros Engineering - offers custom molding, injection molding, assemblies, prototypes, Brooklyn Park, Minnesota

Met-L-Flo - provides rapid prototyping service, offers SLA, SLS, FDM, silicon molding, urethane casting, Sugar Grove, Illinois

Manitowoc Prototypes - rapid prototyping using SLA, urethane, aluminum and zinc casting, Manitowoc, Wisconsin

NLTC - design, rapid prototyping services for industrial, university research, operates ZCorp Spectrum 510, offers SLA, 3D printing, also 3D duraform flex plastic, Duluth, Minnesota

PDS - offers full service for prototype machining, CNC milling, urethane casting, also offers EDM, plating, painting, ISO 9001:2000 certified, Blaine, Minnesota

Peridot - service bureau for product and tool development, rapid prototyping by SLA for acrylate thermoplastic, SLS, FDM, LOM, Hoagland, Indiana

Phillips Plastics - offers product development, rapid prototyping services, SLA, FDM based technique, Hudson, Wisconsin

PME - plastic prototypes from SLA, SLS, vacuum forming, silicone tooling, CNC machined parts, Warren, Michigan

POM - rapid prototyping service bureau, also sells OEM machines, DMD systems, Auburn Hills, Michigan

Pro-Tech - offers sheet metal prototyping service, EMI/RFI shielding, plastic, metal CNC machining, Elmhurst, Illinois

Prototype Solutions - offers rapid prototyping, HAAS CNC milling, Menomonie, Wisconsin

Protojet - offers prototypes using PolyJet inkjet technology, acrylic based photopolymers, Marysville, Michigan

Protomold new - rapid injection molding company, offers online, interactive quotes, parts ship in 5 days, headquartered in Maple Plain, Minnesota

Quality Tool Inc - manufacturing, design, engineering of quality parts, prototyping, DFM services, based in Minnesota and South Dakota

Quick Prototyping - service of Trace Laboratory, offers SLA, FDM based rapid prototyping, operates 3D Systems Viper Si2 machine, Palatine, Illinois

Rapid Prototype Company - offers SLS, SLA, cast urethane parts, operates Accura 25, SL7545 for SLA, laserform ST100 for SLS, Auburn Hills, Michigan

Rapid Solutions - rapid prototyping service bureau, also rapid tooling, SLA,SLS prototypes, Troy, Michigan

RCO - rapid prototyping, tooling, offers SLA, SLS, thermoform parts, Roseville, Michigan

RedEye RPM - over 80 fused deposition modeling (FDM) and Objet systems, uses production-grade thermoplastic materials, parts for low volume manufacturing, Eden Prairie, Minnesota

Realize - rapid prototyping service provider, prototyping services in Industrial design/CAD, SLS, SLA, RTV, cast models,  Noblesville, Indiana

Roush - rapid prototyping services for automotive industry, offers prototypes, fabrication, painting of composite parts, Livonia, Michigan

Scimitar - rapid prototyping, model making services, produces SLA prototypes, RTV molds, urethane castings, Streamwood, Illinois

Schmit Prototypes - rapid prototyping services, SLA, SLS, CNC machining techniques, provides foam mockups, visual models, oversized props, Menomonee, Wisconsin

Select Manufacturing - offers services in rapid prototyping, operates 3D Systems Sinterstation Pro for SLS, also provides LOM, metal castings, Muskegon, Michigan

Suburban Model - prototyping and model making services, SLA, LOM prototypes, Big Bend, Wisconsin

Synergeering - provides laser sintering for nylon, EBM machine for titanium prototypes, Farmington Hills, Michigan

Toledo Prototype - rapid prototyping services, FDM ,3D printing, operating Z Printer 310, Toledo, Ohio

The Technology House - provide services for rapid prototyping, product management, product development, specialized in manufacture of scale models, Solon, Ohio

Unique Model - rapid prototyping, CAD/CAM related services, Stratasys FDM machine for rapid prototyping, prototype materials like ABS, carbon fiber, aluminum, Grand Rapids, Michigan

Uptrend Models - rapid prototyping services, solid modeling, SLA prototypes, vacuum forming, urethane casting, Wood Dale, Illinois

Venus Graphics - services in rapid prototyping, mechanical designing, STL technique for prototyping, Verona, Wisconsin

Vista Technologies  - specialized in rapid prototyping, tooling, prototyping methods like SLA, FDM and SLS, use aluminum as mold inserts for tooling, Vadnais Heights, Minnesota

World Class Prototypes - services include rapid prototyping, urethane casting, CNC machining, also offers fiber reinforced composites, nests, fixtures, Holland, Michigan

Xcentric - offers rapid prototyping, rapid molding services, ABS models by FDM technique, Chesterfield, Michigan