Extruder Feed Rate

[hooked]

I want to be able to change the extruder feed rate for different filament types. Is there a way to do this in the firmware? Or any other method that I can use to change the feed rate.

If I extrude 100mm via Repetier manual settings the printer actually extrudes 115mm. So I want to set this up to give the correct feed rate.

THANKS

Daryl

[Mark]

you can set up the E steeps as the calibration guide shows:
http://reprap.org/wiki/Triffid_Hunter's ... de#E_steps

[hooked]

Thanks, can you please tell me which gear ratio is relevant for my G2 to use for E step calculations.

Cheers

Daryl

[Mark]

I can't remember it , seems to be 11/5...but I think you can calculate it in this way, manually extrude 30mm, compared to the actual filament length and then increase or reduce the steps.

[hooked]

Thanks Mark,

I will try that.

Can you tell me the actual syntax for the code that I need to enter into Marlin firmware.
I cant find it anywhere searching the net.

THANKS

Daryl

[Aliraza521]

And how about the resistanc of your hotbed, it is usually 1.2-1.5ohms, if too high then the temperature won't pass 100 degrees, check this link:???

[Mark]

you can find the steps/mm in configuration.h tab of your firmware and change it :
#define DEFAULT_AXIS_STEPS_PER_UNIT {80,80,2560,93} // MXL, Z M8=1.25, MK8