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Adding a second extruder

Posted by cearza 
Adding a second extruder
June 23, 2016 01:30AM
I would like to add a second extruder in my 3d printer, it's a paste extruder, no heat bed and hot tip are needed.So, no temperature control is required for the second extruder. The idea is to leave the current filament extruder in slot E0 and install a second driver in slot E1 that will drive the paste extruder. Can someone give me a clue on what features should I modify in my code? I'm using repetier as the firmware and ramps1.4 for controlling the step motors.
Re: Adding a second extruder
June 28, 2016 04:56PM

First, you will need to trick a few parameters.

#define EXTRUDERS 1 -> 2
#define TEMP_SENSOR_1 0 -> I'm not exactly sure about this parameter, but I would choose a sensor that would give you a flat reading since you don't need it. You can manually add a thermistor table with fixed values.
#define HEATER_1_MINTEMP 5 -> Change it to a value below your custom thermistor table.
Comment #define PREVENT_DANGEROUS_EXTRUDE so you printer can extrude at any temperature.

It might be a good start to extrude. Keep us informed on your developments!

Hotends, Extruders, Liquid Cooling and Accessories.
Re: Adding a second extruder
June 30, 2016 01:54AM
Thanks, I'll keep you informed
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