Prusa i3

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The Prusa i3 (iteration 3) precedes a third iteration (i3) MK2 which can be found here:Prusa i3 MK2. The i3 incorporates lessons learned from the previous two Prusa designs, as well as other popular modern RepRap designs. See alsoPrusa Mendel (iteration 2).

The Prusa i3 is a very popular design, which led to many people creating derivates. We list these derivates inCategory: Prusa i3 Derivate. Also checkthe Prusa i3 Variants page, as well asthe Prusa i3 Development page

The following is a list of the main improvements made upon the Prusa Mendel Iteration 2

The development of the Prusa Mendel is hosted on github:

On 11-11-11, thePrusa i2isannounced on the reprap blog.

Thefirst committo the Prusa3 GitHub repository.

Josef Prusa:Final refactoring complete.

There were many commits the following months, evidencing the continuous development process.

The rate of commits dropped rapidly after August 2013.

However, that is not the end of the Prusa i3 development. Seethe Prusa i3 Development page here.

Prusa moved the original development tovanilla repositoryon Github in January of 2014.

In May 2015, the official kit becameavailable from Prusa.

The release of the Prusa i3 under theGPLlicense and numerous other factors (its low cost, minimalBOM, simple assembly and calibration procedures, more than adequate documentation, etc) have encouraged the further development of a growing number of Prusa i3 variants worldwide, with different parts, different materials and different assembly processes, but which altogether adhere to the general looks, component assembly, dimensions and functionality of the original Prusa i3.

See the pagePrusa_i3_Variantsfor an attempt to list the Prusa i3 Open Source variants along with their differences / improvements and genetic lineage. Also check out theCategory: Prusa i3 Derivatepage which lists using the wiki tagging feature.

OpenSCADfiles for the printed parts are available on theGithub repository.

To compile the parts and renderSTLfiles, copyconfiguration.scad.dist[1]toconfiguration.scad, and customize by editing values.

Precompiled STL files to make the printer can be found atthe Clone Wars page for the i3, and here zipped[1]

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 theEiNSTeiN variantand thei3 Reworkdesigns 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.

This is a frame created from flat metal sheet, typically Aluminium, but can also be made from other material with a thickness usually between 3mm (0.125 inch) and 6mm (0.25 inch).

Requires specialized tools (e.g.abrasive water jet cutter, laser cutter, CNC router) or contracting out.

Less rigid connection between XZ-frame and Y-frame part.

This frame is created from 8 small sheets of wood.

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 Wades Extruder, its stepper motor needs a minimum holding torque of 40Ncm (0.4Nm). More information can be found on theStepper Motorpage.

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, seeList of electronics,Comparison of ElectronicsandAlternative Electronics.

On November 12th, 2012 Josef Prusa (@josefprusa) tweeted a picture of his metal frame i3 with a custom dual extruder mounted.

Previous posts on Prusas twitter feed reveal that Sound (Slic3rs Developer) inspired Prusa to attach a dual extruder.

In may 2015 was published the&makerssingle direct drive extruder named&struder, was designed to use onWood multitooland now is adapted to use on prusa i3.

The Prusa i3 includes aHeated Bedwhich allows for the use of materials such asABSand nylon which can experience significant warping if printing on a cold platform.

MK3 heating bed, aluminum plate thickness of 3 mm, uniform heating, fast, back has good heat preservation, high temperature can be heated to 120 degrees

I recommend using threaded rod and bearings with this thing, likethis

Mini Prusa i3 Aluminum (English)Detailed HD Assembly Videos on Youtube (engineglue)

Montando la Prusa Mendel i3 (Spanish)

Aluminium Body i3 (Spanish)Video montaje completo por captulos (OverCraft3D)

Please note that the zipped files are not compatible with holes for the Z axis brackets in the Prusa3ALU-*.dxf drawings, at least the ones in the old/ folder in github. Also, the models for Y-axis brackets are for M8 rods. Compiling your own and investigating the Prusa github packages is highly recommended!

This page was last modified on 17 April 2017, at 19:47.

Content is available underGNU Free Documentation License 1.2.

Post Created 739

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