Dual extruder compatible with Prusa i2 and Prusa i3 by cmorell8

Last crawled date: 3 years ago

This design provides a dual extruder compatible for Prusa i2 printer and Prusa i3 printer, by a system of bowden extrusion, to reduce the weight in the x-carriage and avoid vibrations during the print.
Each printer has a design for the x carriage. The rest of the pieces, are the same for both of them. The idea is to have the chance of changing easily your dual extruder from one printer to the other ( in case you have both models at home/work).
You will also need: (in spanish)
FUNDA MALLA 1
CABLE 2 PIN H/H 2
ACOPLADOR NEUMÁTICO 2
TORNILLOS M3X30 3
TORNILLOS M3X20 8
TORNILLOS M3X15 6
J HEAD ALL METAL 2
VENTILADOR 40X40 2
TUERCAS M3 13
ARANDELAS M3 13
For the hot-end part on the carriage, and:
TORNILLOS M4x50 2
TORNILLOS M3X30 1
TORNILLOS M3X20 2
TORNILLOS M3X10 3
TORNILLOS M3X8 3
TUERCAS M3 4
TUERCA M8 1
ARANDELA M8 1
ARANDELA M3 2
RODAMIENTO 688 2
RODAMIENTO 608 1
TORNILLO HOBBED 1
TUBO PFTE 1
RODAMIENTO LINEAL LM8 2
CABLE 4 PIN H/H 1
MUELLES 4X10 2
MOTOR NEMA 17 1
VARILLA M8X20 1
For the extruder. Since you may need two extruders, all this times 2.
I upload also the Marlin firmware I used to set all the parameters needed to support dual extrusion in my Prusa i2. You may need to change some lines, for example the X and Y offsets or the axis_steps_per_unit parameter, to calibrate your motors.
Most of the pieces are printed in ABS, for its mechanical properties