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  • Grainger. Industrial supplies.
  • McMaster-Carr. Supplier of all-the-things mechanical and industrial.
  • OMC Steppers. Gigantic selection of affordable and reasonably high quality steppers, servo motors, and other spinny things.
  • Pololu. A great source for all things robotics, from kits to parts.


  • Online Metals. East to buy of huge varieties of metals and plastics. Part of the larger thyssenkrupp AG.
  • Roto Metals. A great source for weird eutectic alloys.

3D Manufacturing Services

I've included a bunch of companies that do something more than just FFF/FDM manufacturing. These are techniques that are typically not available to anyone at home.

  • eMachineShop. Very capable machine shop that does CNC machining, laser and water cutting, turning, injection molding, and even 3D printing. The main issue I have is they seem only to want to deal with their own CAD software.
  • Hubs. An entry to a peer-to-peer services network. Definitely access to a lot of interesting services. Part of Protolabs.
  • i.materialise. General 3D printing services.
  • Ponoko. 3D printing, laser cutting, PCB assembly, photochemical metal etching (great for super thin fine parts).
  • Sculpteo. 3D printing and laser cutting.
  • SendCutSend. Machine services from water and laser cutting, CNC machining, bending, forming, powder coating.
  • Shapeways. 3D printing services, along with other things. Historically they provided great service, but my last few orders with them were very slow.

Comments or Questions?

If you have any comments, questions, or topics you'd like to see covered, please feel free to either reach out to me on Mastodon (link below) or open an issue on Github.