First steps and all that - my first print having upgraded RepRap to tri colour.
In a stl file how did you say some portion to be printed in diffrent color?
Generally, @Mohamed_Thalib_H , you don’t. Instead, you have multiple STL files, one for each color (this can make aligning the multiple STL files in your plating system tricky, but there are techniques to get around this.)
How much was the upgrade?
I bought the upgrade at the same time as the rest of the reprap (it’s a reprappro) - as per recommendations, I ran the printer mono for quite some months to get used to it etc So have only now added the upgrade.
@Mohamed_Thalib_H
As Howard states, you can’t specify colour in an STL; so instead I split the model to be printed into separate STL’s (one for each extruder/colour). An AMF file is then used to collate all the STL’s needed for one print. The order of the STL files determines which extruder is used. The result exported as one G-Code file. I use Slic3r.
Hi Graham, I have the mendal also, not sure if I have the need for multi colour print.
What is the name of those parts that help feeding ?, you have 3 of them on top, also, what kind of electronics do you use ?
Extruders - there are three on this version.
http://www.reprappro.com/documentation/RepRapPro_Tricolour_extruder_drive_assembly
The electronics are a master (hot bed, x-y-z axis drive, extruder 0 and associated hot end, fans) and a slave (extruder 1 and 2 and associated hot ends and fans) board. Melzi electronics.