# Differen Steps/mm on dual extruders

Good Evening,

I can't find the settings for the extruders. The second extruder needs a multiplier of 30-40 for normal extrusion...

And it's not the printer software: IT IS the G-Code.

How can I change the settings?

In the following you can see a part the G-code of the when T1 has a multiplier of 18.

T0 is around E=80 and T1 is around E=55. can you help me?

T0

G92 E0

G1 X113.100 Y102.700 F7200.000

G1 E80.50000 F6000.00000

G1 F672

G1 X113.100 Y102.300 E80.50327

G1 X132.900 Y102.300 E80.66507

G1 X132.900 Y102.700 E80.66834

G1 X113.130 Y102.700 E80.82989

G1 X113.199 Y102.526 F7200.000

G1 X113.187 Y102.500 F7200.000

G1 F1200

G1 X132.813 Y102.500 E81.01397

T1

G1 E80.50000 F6000.00000

G1 F672

G1 X113.100 Y102.300 E80.50327

G1 X132.900 Y102.300 E80.66507

G1 X132.900 Y102.700 E80.66834

G1 X113.130 Y102.700 E80.82989

G1 X113.199 Y102.526 F7200.000

G1 X113.187 Y102.500 F7200.000

G1 F1200

G1 X132.813 Y102.500 E81.01397

T1

G92 E0

G1 X87.600 Y102.300 F7200.000

G1 E54.03500 F6000.00000

G1 F672

G1 X67.800 Y102.300 E54.22402

G1 X67.800 Y101.900 E54.22783

G1 X87.600 Y101.900 E54.41685

G1 X87.600 Y102.270 E54.42038

G1 X87.400 Y102.299 F7200.000

G1 X87.513 Y102.100 F7200.000

G1 F1200

G1 X67.887 Y102.100 E54.63543

G1 E54.03500 F6000.00000

G1 F672

G1 X67.800 Y102.300 E54.22402

G1 X67.800 Y101.900 E54.22783

G1 X87.600 Y101.900 E54.41685

G1 X87.600 Y102.270 E54.42038

G1 X87.400 Y102.299 F7200.000

G1 X87.513 Y102.100 F7200.000

G1 F1200

G1 X67.887 Y102.100 E54.63543

## Comments

Just to make sure

when you say it extrudes 100mm, this should be 100mm of filament going

intothe extruder, not hot filament coming out the nozzle.Which setting in which software to you refer multiplier to? I assume here you mean slicer so it has 18x extrusion. That would mean your steps per mm in extruder is wrong. From the ratio it could be exactly the error Martin mentioned. You calibrate what goes in not what goes out!

0.85 is quite normal, 16 absolutely off so your steps per mm in firmware for second extruder must be factor 18 too low.