Psyonic

Thank you @ahoeben!! Things make a LOT more sense now! I was running it like it was one, long string, searching for "LAYER:" to modify at those points. Thank you!! This makes the results I was getting make a lot more sense!!

Thanks @nallath. Yeah, I'm not really interested in creating a plugin, just a script to do simple changes to the gcode. Do you know where I could find some info on the structure of the scripts? Currently I'm just working on the assumption that def execute(self, data): return [self._some_other_method()] is required and does that actual processing of the gcode, and that "data" is actually the entire gcode to be processed, but this is just an assumption as I can't seem to find any detailed information or tutorials. I'm also not very familiar with python, but I'm getting used to it...

Thanks @Nicolinux. The version thing was killing me! Still don't know the reason for it. I'm really looking for the structure of Cura scripts, like is "data" what the script is run against, i.e. the entire gcode? And any other real basics. Not sure I'm ready to write a full-blown plugin yet, just want to get a basic script working. But I'm making some headway now. Thanks again!

Can anyone point me at some tutorials for the scripts in Cura? Can't seem to find anything out there in the ether! Just the basics of what all the Cura specific stuff is what I'm looking for. Particularly, what the hell does the line "version": N, mean?? I've found a script example that has "1" as the version but it doesn't work unless I change it to "2"? I thought it would be version tracking for the script itself but obviously I'm wrong!

I have retraction on and it does retract at the last "island" before it moves to the beginning of the next layer, that not an issue. It's not "filament retraction" that is the problem, it's the fact that the print head moves to a place with already printed material before the Z axis moves down to print the next layer. When the nozzle passes over an island that has not already been printed it's fine, there's no material to hit, the problem is when it goes back to the first island it printed to start the next layer, when it gets there it hits the already printed material and only then moves the Z axis down. Do you know if it can be set to move the Z axis at the last island, before moving to the start of the next layer?? As you can see in the snippet below, it finishes a layer with "G0 X177.816 Y153.585" then starts the next layer with "G0 X177.816 Y153.585 Z4.6" From what I can tell, the last line of the previous layer "G0 X177.816 Y153.585" should not be there! Perhaps this is a bug?? G0 X180.98 Y152.661 G0 X177.816 Y153.585 ;TIME_ELAPSED:600.611000 ;LAYER:22 G0 X177.816 Y153.585 Z4.6 ;TYPE:WALL-INNER G1 F1500 E788.87369 G1 F3600 X177.511 Y153.598 E788.88384

Hi All, When a layer finishes the nozzle moves to the start point of the next layer, but the Z axis only moves AFTER the nozzle has moved to it's start point. When the nozzle gets to the start of the next layer it clips the already printed piece and on delicate parts can break them off! This is particularly bad when printing parts with multiple, spindly rising pieces (see pic). (has happened to me a number of times!) I have "Z Hop When Retracted" turned on but it NEVER Z Hops. This is mostly unnecessary anyway except for that final move back to the layer start point. I can't find a setting to change this behavior, does anyone know if I can force Cura to move the Z axis at the end of a layer but BEFORE the nozzle moves to the start point of the next??? Or could someone please explain to me why the Cura team feels this behaviour is best?? Related setting I have turned on: Layer Height : 0.2 Combing : All Retract Before Outer Wall : ON Avoid Printed Parts When Travelling : ON (excellent setting!) Avoid Supports When Travelling : ON Travel Avoid Distance : 0.625 (default) Z Hop Only Over Printed Parts : ON Z Hop Height : 2mm (excessive I know, just for testing)

Hi gr5 I tried your suggestion and the lines are still there but are almost invisible, so that's good, but it has created all these start or stop points that are much worse than before. Do you know what makes them or better still, how to reduce them? The first picture is with combing mode set to all, the second is with not in skin. Thanks

Printing now...

Hey all, Does anyone know if Cura can produce a "Z Hop" before a travel move ONLY on TOP layers?? Z Hops are not needed everywhere with good temperature and retraction settings but would be very useful if only used on TOP layers, due to the nozzle leaving that horrible melted line on the beautiful, fresh top layer. If this is not currently available, perhaps this could be included in future releases?? Ta

Thanks smartavionics, I just tried this and it helped quite a bit, but it still was not enough to completely remove the blobs. Is there any way to increase this distance that you know of?

Really? I'll check that out, thanks. It would be nice to be able to control how far this move travels

Hi Guys n' Gals I have been trying to get rid of blobs/zits and have found that the culprit (on my printer) is when an outer wall stops, the pressure in the nozzle forces out some extra material between when the X/Y movement stops and the retraction of the filament begins. I have a Bowden setup so there is some lag between a stop and the retraction relieving the pressure. I found the "Outer Wall Wipe Distance" has not helped as it simply continues on it's path but it gave me a thought: If the "Wipe Distance" could move in the negative direction to the normal of the surface then stop, the blob/zit would be created inside the inner walls and therefore be hidden by the printing of the next layer...??? What do you think????

bbbbbrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmm (that's my drum roll, and that's all I have to offer... sorry!)

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...

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. Info: 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. RANDOM SNIPPET: ################################# ;TYPE:WALL-OUTER 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?? HELP!!!!!!!!!!??? Thanks guys and gals!!