Rapid Prototyping Services

1: Shapeways - Very cheap 3D printing; great community features.
    The Netherlands
    SLS - FDM - PolyJet - Z-Corp - 3D Metal

2: PADT, Inc. - Great engineering services too.
    Tempe, AZ
    SLA - SLS - FDM - PolyJet - RTV - Inj Molding

3: Paradigm Engineering - Great product design & mold design services.
    Chandler Heights, AZ
    SLA - SLS - FDM - RTV

4: 3D Reprographics - Specialize in architectural models.
    Signal Hill, CA
    SLA - SLS - FDM - PolyJet - Machined Plastic

5: Morpheus Prototypes LLC - Offer finishing and painting services too.
    Torrance, CA
    SLA - SLS - FDM - PolyJet - 3D Printing - RTV

6: ProtoCafe, Inc. - Offer laser engraving and 3D scanning too.
    Redwood City, CA
    SLA - SLS - FDM - PolyJet - 3D Printing - RTV

7: Solid Concepts, Inc. - Multiple USA locations & fast deliveries.
    Valencia, CA
    SLA - SLS - FDM - PolyJet - 3D Metal - RTV - Machined Plastic - Inj Molding - CNC

8: Solid Image 3D - Lets you rent FDM machines in Southern California.
    Tarzana, CA
    FDM

9: Archetype 3D - Building professional scale models since 1984.
    Louisville, CO
    FDM

10: 3Axis Development, Inc. - Offer many services.
    Boynton Beach, FL
    SLA - SLS - FDM - PolyJet - 3D Metal - RTV - Machined Plastic - Inj Molding - CNC - Sheet Metal - Metal Castings

11: Engineering & Mfg Services, Inc. - They also offer 3D scanning and sell 3D printers.
    Tampa, FL
    SLA - SLS - FDM - PolyJet - Z-Corp - 3D Metal - RTV

12: Quickparts - Wide selection of prototyping processes; great website.
    Atlanta, GA
    SLA - SLS - FDM - PolyJet - RTV - Machined Plastic - Inj Molding - CNC - Sheet Metal - Metal Castings

13: ProtoNow Engineering - Specialize in ABS prototypes.
    Bondurant, IA
    FDM

14: C.ideas Inc. - Great website; many 3D printing materials.
    Cary, IL
    SLA - SLS - FDM - PolyJet - 3D Printing - RTV

15: GPI Prototype & Mfg Services - Direct metal printing makes injection tooling easier.
    Lake Bluff, IL
    SLA - SLS - FDM - PolyJet - Z-Corp - 3D Metal - RTV - Machined Plastic - CNC

16: PERIDOT, Inc. - Good product development services too.
    Hoagland, IN
    SLA - SLS - FDM - RTV - Metal Castings

17: RapidPSI - Full service facilities.
    Wichita, KS
    SLA - FDM - RTV - Machined Plastic - Inj Molding - CNC

18: BERMAG Industries - Been making prototype metal castings for over 22 years.
    Hickman, KY
    SLA - SLS - FDM - CNC

19: Goddard Technologies, Inc. - Helped design the Rock Band guitars.
    Beverly, MA
    FDM

20: Mack Prototype, Inc. - Great for low-volume production.
    Gardner, MA
    SLA - FDM - RTV - Machined Plastic - Inj Molding - CNC

21: RedEye - Get FDM parts in production quantities.
    Eden Prairie, MN
    FDM

22: Vista Technologies LLC - One to three day delivery times.
    Vadnais Heights, MN
    SLA - SLS - FDM - PolyJet - 3D Metal - RTV - Inj Molding - Metal Castings

23: Synaptic Rapid Prototypes - Affordable FDM prototypes.
    O'Fallon, MO
    FDM

24: Rapid Models & Prototypes, Inc. - Creating models since 1960.
    Cherry Hill, NJ
    FDM - RTV

25: Triad Plastics - Offer competitive manufacturing too.
    Reno, NV
    SLA - FDM - Inj Molding

26: Design Prototyping Technologies - Can make large SLA parts.
    Syracuse, NY
    SLA - SLS - FDM - PolyJet - RTV - Inj Molding - Sheet Metal - Metal Castings

27: MODEL-EASE - Online price estimator.
    Fredonia, NY
    FDM

28: Laser Reproductions - One of the top service bureaus in North America.
    Gahanna, OH
    SLA - SLS - FDM - 3D Metal - RTV - Machined Plastic - CNC

29: American Precision Prototyping, Inc. - Focus on quality parts.
    Tulsa, OK
    SLA - SLS - FDM - PolyJet - RTV - Machined Plastic - Inj Molding - CNC

30: TECH, INC - Wide variety of prototyping & manufacturing solutions.
    Perkins, OK
    SLA - SLS - FDM - RTV - Machined Plastic - Inj Molding - CNC

31: Oregon Pattern & Foundry - Specialize in aluminum and brass/bronze castings
    Eugene, OR
    FDM - Metal Castings

32: Precision Technologies, Inc. - Provides numerous secondary processes too.
    Reno, PA
    SLA - SLS - FDM - 3D Printing - RTV - Machined Plastic - Inj Molding - CNC - Metal Castings

33: Solid Technologies, Inc. - Sell 3D printers too.
    Blue Bell, PA
    SLA - SLS - FDM - Z-Corp - Metal Castings

34: Avid Rapid Prototyping Services - Offer 3D printing with ABS plastic.
    Knoxville, TN
    FDM

35: 360 Prototyping, LLC - Help with concept generation too.
    Austin, TX
    SLA - FDM - RTV

36: Accelerated Technologies - Has served over 5,000 clients.
    Austin, TX
    SLA - SLS - FDM - PolyJet - 3D Metal - RTV - Inj Molding - Metal Castings

37: USM Inc. - Full-size mechanical models and FDM parts.
    Houston, TX
    FDM - Machined Plastic - CNC

38: Design My Idea LLC - Great company for inventors.
    Lehi, UT
    SLA - SLS - FDM - Inj Molding

39: 3DProtoPrint.com - They charge only $35 per hour for FDM parts.
    Salt Lake City, UT
    FDM

40: Invent-A-Part, Inc. - Simple, easy, and inexpensive.
    Springville, UT
    FDM - PolyJet

41: Proto Technologies, Inc. - Can make large parts.
    Liberty, WA
    SLA - SLS - FDM - RTV - Machined Plastic - Inj Molding - CNC - Metal Castings

42: RISE Rapid Prototyping & Manufacturing - Goal is exceptional accuracy and precision.
    Mountlake Terrace, WA
    SLA - SLS - FDM - 3D Printing - RTV - Machined Plastic - Inj Molding - CNC