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bq Reprap Prusa i3 Hephestos 3D Printer Kit

The Prusa i3 Hephestos is one of the most popular 3D printing kits in the RepRap community. With a wide variety of uses and being extremely simple to set up, the Prusa i3 Hephestos is an excellent 3D printer for both beginners and advanced users.

This kit is available in red or blue. Please email us your color preference after placing your order.

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bq's Prusa i3 takes the classic Prusa i3 design to another level. The key improvement of the bq Prusa i3 is that it is designed to be very cable tidy. This means that the cables do not get in the way during prints (and it also creates a nice aesthetic). This printer hardware is 100% open source meaning you can easily modify, hack, and upgrade this printer so that it can grow with you. All printed part files for this printer can be downloaded for free so that you can easily replace them at any time. 

The bq Prusa i3 has a nice and capable build area of 8.5x8x7 inches. If at any point in the future you decide you need more build area, the Prusa i3 is easily modifiable so that you can add additional build area to the bed. Perhaps the best part of the bq Prusa i3 is the level of detail you are able to achieve when printing. The bq Prusa i3 prints at layer heights of 60 microns or .06mm which means you can print layers that are almost invisible. This kit also comes with an LCD screen and SD card reader so that you can print without having your computer plugged in to the printer.


  • Printer without spool: 460 x 370 x 383 mm
  • Printer with spool: 460 x 580 x 383 mm
  • Print volume: 215 x 210 x 180 mm
  • Box dimensions: 408 x 425 x 233 mm


  • Box weight: 9.7 Kg

Layer Resolution

  • Very high: 60 microns
  • High: 100 microns
  • Medium: 200 microns
  • Low: 300 microns

Print speed

  • Recommended speed: 40-60 mm/s
  • Maximum recommended speed: 80-100 mm/s


  • Ramps 1.4
  • Mega 2560
  • LCD screen with rotary encoder and navigation button
  • Glass base (non-heated): 220 x 220 x 3 mm
  • Power source: 220 AC 12 DC 100W
  • 100k thermistors in the extruder
  • Heater cartridge: 40 W 12 V

General Mechanics

  • Frame and base of powder-coated aluminium
  • Toughened chrome bars for the X, Y and Z carriages
  • LM8UU linear ball bearings for the X, Y and Z axes
  • B623ZZ axial ball bearings for the X and Y pulleys
  • Igus cable-tidies
  • Flexible couplings for the threaded bars on the Z axis
  • 4-point cushioned levelling system for the print bed
  • Quick-change print bed system with clips
  • Brushless axial fans with ball bearings

Extruder Mechanics

  • Custom extruder
  • 0.4 mm nozzle for 1.75 mm filament
  • Fin heat sink with axial fan
  • Cooling nozzle for printed objects


  • PLA
  • HIPS
  • Flexible Filament


  • Marlin-derived firmware
  • Recommended software environment: MatterControl, MatterControl Touch
  • Permitted files: .gcode
  • Compatible operating systems: Windows XP and later, Mac OS X and later and Linux


  • SD card reader
  • Type B USB port

Why Buy From MatterHackers

At MatterHackers we pride ourselves on offering friendly service, advice and support. Our prices are always the lowest in the industry when you factor in our free shipping for every item on the MatterHackers site (including 3D printers). Most of all, our staff is friendly and knowledgeable. They have been 3D printing for several years now and are happy to answer your 3D printing questions. Have a question about the amazing capabilities of your new Prusa i3 Hephestos? No problem. Feel free to give us a call. Additionally, your new printer works best with MatterControl, our in house 3D printing software. MatterControl is the most intuitive, feature rich 3D printing software and includes MatterSlice - the fastest and most accurate slicing engine on the market.

In short, buying a 3D printer from MatterHackers is a holistic experience. We are here to partner with you through every step of your 3D printing journey. Additionally, we have all of the PLAABS, and Specialty Filament that you could ever need to design anything you can imagine.

Check out the video below for detailed building instructions for the bq Prusa i3