CARP Box Development

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CARP Box Documentation

Main improvements

Compared to previous CARP prototype:

  • Added Z axis frame for better stability and sturdiness
  • X axis frame and carriage redesigned for dual extruder with maximal distance of nozzles 25mm
  • mounting holes for two bowden extruders were designed on sides of the printer
  • Added holes and openings for cable management
  • Added holes for EURO connector and power switch
  • Filament spool holder was made a part of the printer
  • Timing belt clamp for GT2 was prepared
  • Prepared mounting holes for different sizes of power supplies
  • Ready for Sanguinololu 1.3a and Arduino Mega with RAMPS 1.4 electronics
  • Joints redesigned to use standard lengths of M3 screws
  • Extruder changed to use E3D an J-Head hotends instead of Reprapworld v5

Pending improvements

To be done on current version of CARP Box:

  • Mounting for display with keyboard and SD card
  • Dual head worm gear extruder for 1.75 and 3 mm filament
  • Optical endstops in X and Y axis and proximity sensor for Z homing and heatbed levelling


The development of the CARP Box is hosted on Thingiverse.