Prusa i3 Acrylic

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Prusa_i3_Acrylic Documentation
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Prusa i3 Acrylic

Release status: working

Prusa i3 Reprap.jpg
Prusa i3 is a redesign by Prusajr.
CAD Models
External Link

The Prusa i3 Acrylic is a RepRap model originally designed by Josef Prusa. 3D Printer Czar redesigned its Acrylic Frame. Compared to its predecessors and other RepRap machines, Prusa i3 is known for its extreme ease of assembling, reliable printing, and dual extruder option. This kit uses laser-cut acrylic sheets to improve stability. In our experience, the Prusa i3 can be assembled within 3 hours, making it ideal for first-time RepRappers.

Technical Details

  • 8″x8″x7.25″ (20cm x 20cm x 18cm) Build Envelope
  • Electronics: Any RepRap electronics supporting 4 stepper motors.
  • 6mm Acrylic Sheets as Side Support
  • 0.4mm J-head MK IV Hotend
  • 50 micron Layer Height Aachievable
  • MK2A Heated Build Platform
  • GT2 Pulley’s and Belts
  • 12V 15A Power Supply
  • Greg Frost’s Greg’s Extruder

How to get it?

Included in the Prusa i3 Acrylic Kit:

STL File

in the description section on:

Frame Sheet File

frame sheet (to be cut from 6mm acrylic):


  • MK2A Heated Built Platform (wires and LED pre-soldered)
  • Nema 17 Stepper Motors x 5 (connectors and pins also included)
  • 12V 10A Power Supply
  • RAMPS 1.4 Shield or Melzi 2.0(A compact all-in-one controller board)
  • Mega 2560 R3 Control Board
  • Pololu Stepper Driver x 5 (with heat sinks)

Linear Motion

  • GT2 20-Tooth Aluminum Pulleys x 2
  • GT2 Timing Belt 1.7m
  • Hardened Zinc-Coated Precision Rods
  • LM8UU Bearings x 10

Tool Kit

  • 2m Tape Measure
  • Allen Wrench Set
  • 14mm Wrench
  • Circular File
  • Needle-nose Pliers

Vitamin Description

  • 3mm x 210mm x 200mm Borosilicate Glass plate
  • MKIV J-head hotend (1.75mm with 0.4mm orifice)
  • 5mm threaded rods 320mm x 2
  • 8mm zinc coated smooth rod 300m x2
  • 8mm zinc coated smooth rod 350mm x 2
  • 8mm zinc coated smooth rod 320mm x2
  • LM8UU beearing x 11
  • 623 bearing x 4
  • 608 bearing x 4
  • GT2 32 teeth pulley x 2
  • GT2 belt 1.1m