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Low extrusion in Cura 2

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Hi All!!!

First timer here so please be kind!


I have just migrated from Cura V1 to Cura V2 (3.2.1 Linux)

Before you ask, I have designed and built my own 3D printer and extruder from scratch and am currently configuring it. Cura has been, by far, the stand out software package on the Linux platform.

It's a RepRap, Marlin driven machine. It's well set-up and configured in Marlin and I trust it's capabilities. I have had a great deal of success using Cura V1.



I have been printing the XYZ Calibration Cube on a RAFT no problems in Cura V1, but now in Cura V2, it seems to print the RAFT no problems (approx 2.5mm of linear extrusion per 20mm of travel, according to the G-CODE) This prints great, but when it begins to print the first layer (of the cube) the extrusion speed drops to 0.3mm per 20mm linear travel (approx) which, obviously, completely ruins the first layer!!! (FYI, the G-CODE looks like it uses a very slow extrusion over the entire part although I haven't allowed the print to continue past the first several layers) ) This is also observed by watching the extruder, it's REEEAAAAAALLY slow!!


I can provide images if requested.




G1 F1800 X190.181 Y140.204 E995.08106
G1 X209.781 Y140.204 E995.40701
G1 X209.781 Y159.804 E995.73296
G1 X190.181 Y159.804 E996.05891



As you can see, 20mm travel is only producing (approx) 0.3mm extrusion... WTF???


So, I guess my question is WTF???


I've been through all the settings (I believe) and have not found anything that fixes this issue. The setting "Initial Layer Line Width" does have an effect, up and down on the first layer, but I can't pin-point anything that is causing this.


Am I just a serious NOOB or is this a knows issue??



Thanks guys and gals!!

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Thanks DidierKlein,

Yeah, I'm sure that setting is correct, I'm assuming you mean the one in the "Material" settings. It's set to 1.75mm which is correct. FLOW is set to 100% as well.


The RAFT prints fine, visually perfect, good flow and adhesion to a raw glass plate, it's the rest of the print that is crappy...

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