Been trying to dial in the first layer with a Dual Extruder head.
At default Cura settings of 125% initial line width and 100%flow rate it has been over extruding. I dialed the first layer width down to 100% and backed the flow rate down to 95-96% and tweaking at layer 5 down to 94% to actually get a decent first layer pattern and overal print pattern. So to me it sounds like the extruders’ steps/mm are off slightly. NOTE: I said slightly.
I marked the filament and clicked extrude 10x expecting 100mm of travel. It only pushes through 80mm. Ok possibly mis-counted. manually Sent a g1 with 100mm extrusion and got the same result.
My first thought is maybe the hobbed bolts are a different size than the single extruder because the dual extruders’ steps/mm were a lot different than the single head. 808 on the dual vs. 851 on the single. To me it wouldn’t make sense to have different sizes between the two, but I didn’t design it.
Anyone have any thoughts?