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Home - Locomotive Printing

We Build Cool Stuff

Learn about the Big Boy 3D Printer and the people behind it

About us

The Big Boy 3D Printer

An Incredibly Overbuilt 3D Printer that has elements of generative design, a custom tool changer, and lots of rigidity. 

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Project Goal

Learn additive and subtractive Manufacturing methodology and The Design Process by building an experimental 3d printer/mill hybrid from scratch.

Print Area of 330mm x 475mm x 500mm

We tried to design with the biggest print area we could reasonably manufacture. 

Overall Size: 700mm x 700mm x 900mm

Our requirement was for the printer to fit through a standard door. We were able to meet that requirement.

Weight: Approximately 250 lbs

Since this is steel construction through and through, the printer weighs a fair bit. This weight and rigidity make it easy to add a spindle.

Reliable 80mm/s Print Speed

The 7 NEMA 23 steppers provide more than enough speed and force to move the X,Y, and Z axes.

Custom Designed Tool Changer

Our custom milled dovetail magnetic tool changer is a completely novel design, we even had to buy a special insert for manufacturing it!

Project Updates

The Team

Learn about all of the people who make cool things happen. 

Alan Kraft

  • Purdue Nuclear Engineering Alum
  • Chief Engineer on the Project
  • Master of CAD
  • Procured Ball Screws and Rails
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Alex Josten

  • Purdue Aeronautical Engineer
  • Master of CAM
  • Main Manufacturer
  • Made all Tubes and Couplers
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Matthew Fitzgerald

  • Purdue Systems Analysis and Design Alum
  • Worked on Procurement
  • Designed Electronics
  • Manufactured Gusset Plates
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