Prusa i3
English • العربية • български • català • čeština • Deutsch • Ελληνικά • español • فارسی • français • hrvatski • magyar • italiano • română • 日本語 • 한국어 • lietuvių • Nederlands • norsk • polski • português • русский • Türkçe • українська • 中文(中国大陆) • 中文(台灣) • עברית • azərbaycanca • |
Release status: working
Description | Prusa i3 is a redesign by Prusajr.
|
License | |
Author | |
Contributors | |
Based-on | |
Categories | |
CAD Models | |
External Link |
Contents
Introduction
The Prusa i3 (iteration 3) is the newest and current 3D Printer design by RepRap Core Developer Prusajr. The i3 incorporates lessons learned from the previous two Prusa designs, as well as other popular modern RepRaps designs.
Specifications
- Printed Parts: ???
- Non-Printed Parts: ???
- Assembled Ramps 1.4 (not including stepper drivers): ~$25 USD
- 5x Assembled stepper driver boards with heatsink: ~$9 USD each (Don't you only need four of these?)
- 5x NEMA 17 stepper motors: ~$13.50 USD each
- Material Cost: ???
- Cost: ??? + $137.50 USD
- Printing Size: ??mm x ??mm x ??mm (ANY FEEDBACK FROM OWNERS?)(Dimensions may be 200x200x100mm [[2]])
- Precision: ??mm (position/printing)
- Speed: ??cm/s (position/printing)
Main improvements
The following is a list of the main improvements made upon the Prusa Mendel Iteration 2
- enhanced frame rigidity (prevents x backlash)
- easy assembly
- parametric files for multiple sizes/bearings or bushings
Development
The development of the Prusa Mendel is hosted on github: https://github.com/josefprusa/Prusa3.
History
Printed Parts
The STL files to make the printer can be found at Clone_wars:_Prusa_iteración_3.
To compile yourselve use the files from Github [[3]] (box style files) [[4]] (Single sheet style) Copy configuration.scad.dist to configuration.scad and fill custom settings section there
RP every .scad in this directory (except complete-printer) once.
Aim for 0.3mm layers and 2.2 extrusion width (width over thickness),
for 0.66mm stroke width. Printer is tested at this setting.
Using doc/complete-printer.scad as a visual clue and doc/manual.txt as a guide, build the printer.
Frame type
Most major Prusa i3 Frame Styles fall into two categories: the Single Sheet Frame, and the Box Style Frame. The Single Sheet Frame is designed to be manufactured through the use of a Laser cutter, WaterJet, or CNC Mill / Router Table. There are two current development tracks within the Single Sheet Frame, an Aluminium frame style, and a gusseted Wood frame style. Both are designed to support 6mm or thicker framing material. Both the EiNSTeiN variant and the i3 Rework designs use single sheet aluminum frames, as do most kits. The Box Style Frame, on the other hand, is designed to be easily manufactured at home with basic woodworking tools. The Y-axis for both frame styles is similar to that of the older Prusa Mendel Iteration 2.
Single Sheet Frame
This is a frame created from a single sheet of metal, typically Aluminum, but can also be made from various Materials with a thickness greater than 6mm / 0.25 inch
pro:
- Looks professional (subjective)
con:
- requires specialised tools (e.g. Water flow jet cutter)
- Less rigid connection between XZ-frame and Y-frame part
Wood Sheet frame
This is a version of the sheet frame that is designed to be laser cut out of wood or plastic (eg. acrylic) if you don't have access to a waterjet cutter. The only difference is that this version has support gussets on the back side of the vertical frame (the side that doesn't have the z threaded rods).
Construction is the same.
Laser cutting files can be found on Josef's Github.
pro:
- Looks professional (subjective)
con:
- Does not require specialized tools (e.g.waterjet cutter)
- Less rigid connection between XZ-frame and Y-frame part (Connects in the same way as the alu sheet frame)
Box Style Frame
This frame is created created from 8 small sheets of wood.
pro:
- Can be created with standard DIY tools
- More rigid connection between XZ-frame and Y-frame part
con:
- Looks less professional (subjective)
Electronics
Stepper Motors
The Prusa i3 uses, including the extruder, 5 NEMA17 stepper motors. Two of these motors, the Z axis motors, are connected to the same stepper driver of the electronics. If using Wade's Extruder, its stepper motor needs a minimum holding torque of 40Ncm (0.4Nm). More information can be found on the Stepper Motor page.
Controller Electronics
About any RepRap controller works for the Prusa i3. Required features: 4 stepper drivers, 1 thermistor input and 1 heater output for the extruder and optionally another thermistor/heater pair for the heated bed. Choosing the best one for your printer is mostly a matter of taste. For comparisons, see List of electronics, Comparison of Electronics and Alternative Electronics.
Extruder
On November 12th, 2012 Josef Prusa (@josefprusa) tweeted a picture of his metal frame i3 with a custom dual extruder mounted.
//Need name, info, and link to this extruder and how to build it. Can anyone help? -idolcrasher
Previous posts on Prusa's twitter feed reveal that Sound (Slic3r's Developer) inspired Prusa to attach a dual extruder.
Heated Bed
Filament Holder
For Sheet Style,
For Box Style,
- http://www.thingiverse.com/thing:104557,but I recommend using threaded rod and bearings with this thing, like this
- http://www.thingiverse.com/thing:111157
Videos
- Montando la Prusa Mendel i3 (Spanish) http://www.youtube.com/watch?v=-31Zn7wY7jk
TODO add more solutions