Diagnose this printing issue

[adamfilip]

I have my itty bitty dual extruder working
when i print this with my left extruder with white ABS its not filling it properly
and large spacers are shown

When i print it with my right extruder and black Abs it prints fine
using exactly the same settings

I dont want to mess with my esteps as it affects both extruders..

thoughts?

[TechMasterJoe]

something is slipping if you can put a few rubber bands around the top and see if the added grip helps if so your just slipping on the filament
extruder 1 and 2 each have there own Esteps and just because the uses the same parts means nothing
on my rig E1 = 892.4 steps E = 872.3 but i'm using 2 of the stock extruders right now converted to bowden with dual hexagon
i have printed most of the itty bitty dual even have a hardware kit just waiting on steppers and free time

another thing that can do this is height make sure both hotends are dead Even

[adamfilip]

Where in marlin is the estep for the other extruder
do i just add it after the first extruder?

also in the lcd control i dont see a 2nd e step setting

[printbus]

As of at least the September 2014 Marlin source code that I use, there is no support in Marlin for more than one extruder steps per unit value. One can add as many additional parameters as one wants to the DEFAULT_AXIS_STEPS_PER_UNIT array, but they won't do anything. The code in configurationStore.cpp will only read in the first four values, and the variables holding the run-time per-axis values for steps per unit, feed rate, and acceleration are only sized to hold four values.