Cura + ThreeDubber on daVinci Jr (Page 1 of 3)

You have to choose other model and input your own variables.. Or edit the gcode before you convert it.

I've added Mandel and Lutzbot mini - both have that 15mm step-up...

So is it just a bad luck from my side or all 3x of them has this feature?!
Or that's Cura specific?!

Thanks.

I feel stupid, that line can be found in Cura's start.gcode section.

So I checked decoded gcode from XYZWare and it said Z0.350, great, filled that in and viola - nearly cracked the glass!!!
Seems to be its ignoring Z offset set on the printer itself when you do manual gcode edit, I tried to change Z offset to test my theory and what you know - scratched glass once again!

Anyway, due to 1st layer being set to 0.3 I've changed that gcode to Z0.650 and it works a treat.

Also worth to mention that anything above 30mm/s extrusion speed makes my extruded to skip steps.
Don't know if I just need to clean my extruded or or it's a filament I'm using is very slippery.
Anyway I ordered new extruder gear which should have better grip and hopefully I'll manage to squeeze more than 30mm/s.

Yay, successful pring using Cura generated gcode!!! It works!!!

I've opened 2x gcode files of the same object side by side (XYZWare and Cura)  and tried to find difference at Z axis movement.
And there it was, on Cura it uses G0 when moving Z axis but on XYZWare G1.
According to gcode "cheer sheet" G0 is rapid movement but G1 - controlled movement and daVinci for some reason is ignoring G0 as a command..

So I've opened Cura gcode in TextWrangler and by using find and replace I've changed all G0 commands with G1.

Works a treat!

One thing is odd though, I was trying to add hotend wipe gcode lines (planing to add little "cleaning mat" to the side of my bed) and it does everything mirrored!
Basically I've added "G1 X0 Y75, G1 X0 Y75...." to run hotend couple of times back and forth for the cleaning purpose and even though I've stated X0 it runs over to the opposite side to do that thing and then back...
I've also copied XYZWare gcode begining to the Repetier host app (it has visualising option for your hotend moves) and that famous XYZWare pre-print double line which is happening on the right hand side on your printer shows up at the left on Repetier software.
Ok that could be Repetier software thing I thought but again why my nozzle cleaning code jumps to the opposite side.
I'll look into it later on. For now while it works I'll enjoy some prints via Cura!

http://www.soliforum.com/misc.php?actio … download=1

@Anthem
Brilliant, I'm on the Mac and prefer CLI so I can create automated script now, yay, instead or powering on VM with Windows etc.
Thank you!!!

@Anthem
Quick question.
As you know by default in Cura's start.gcode there is this line "G1 Z15.0 F{travel_speed} ;move the platform down 15mm"
which I need to change to "G1 Z0.650......" otherwise it floats way to high of my print surface (XYZware does "G1 Z0.350..." but that's way too low, G1 Z0.650 is the go in my case with 0.3 initial layer)
Now Cura released new version of Cura (which is quite nice and does slicing on some STL's much better) which killed start.gcode section completely.
Sorry I haven't had a time to check/start using your CLI app of ThreeDubber so I don't know if you have that line in there already, but if you don't then have you considered adding it?!
Thanks.

You said you updated Cura, huh? I bet they're either using a different name for the filament length, or don't include it at all by default.

The script looks for either "Filament used" or "filament used" to set the total_filament value, so it must not be finding that. I pushed a fix that should default to 1mm if it's not found, so try that.

I just installed Cura last week before this new version and I haven't updated yet. I'll give it a shot and see what's different. If it doesn't support custom gcode anymore as you say, then I might have to work out a way to do that. Currently I don't touch the gcode body at all, just the headers, but using the wrong gcode is going to ruin a lot of stuff.

I'm already working on an improved version so I'll see what I can do, but no promises. I stay pretty busy away from my computer

@Anthem

Just to confirm, I have my .3w file now.

Much appreciated.

P.S.: If you need any help with testing, scripting etc, drop me a line and I'll see what I can do.

Ladies and gents,

As some of you may know I've been using Cura + ThreeDub with my Jr for some time now and I can confirm that not using XYZ Ware at all is a dream come true (sounds quite sad isn't it )

One thing what really annoyed me with Cura by using generic settings was that odd behaviour like printhead going to opposite side and then back leaving some mess on the print bed and some other behaviour...
Anyway, now I managed to fix all those annoying little things and want to share with you so you could enjoy Cura as much as I do.
Also I've done some visual improvements so Cura can be a bit more Jr friendly (printbed stl so it looks like Jr bed instead of some random bed in Cura, and when you add printer you see XYZ section)
Please see attached pictures.

To get this done you need to copy couple of files.
(I'm using Mac so these are locations on the Mac but should be similar on Win I guess)
Also I'm using Cura 2.1.2 - haven't tested on the older versions.

/Applications/Cura.app/Contents/Resources/cura/resources/machines/davinci_jr.json
/Applications/Cura.app/Contents/Resources/cura/resources/meshes/davinci_jr_platform.stl

+ I have added profiles. 2x as per XYZ Ware and 1x which I'm using on daily basis.

Files you can download from:
https://drive.google.com/folderview?id= … sp=sharing

Just a side note, I have also imported XYZ's "signature" line on the side before every print and set to zero Skirt lines in Cura.
For some reason regular Skirt method on Jr often made a mess or haven't prised nozzle enough to start good 1st layer.

@chorobe - those ulti etc are preset profiles for ultimaker, you can either use those or create your own profiles what I suggest instead so you could fine tune it for your machine specifically. What's best for one doesn't always mean it's the best for other.
You can set layer height in any profile, Cura will automatically adjust dependant settings like 1st layer height etc according to the layer height you've chosen.

With Jr I managed to go down to 0.04 but any print going faster than 20mm/s extruder was struggling quite badly. Also worth to mention that I needed to increased temperature a bit so filament can flow a bit more easily.

Is it worth it, depends from you needs...
Yes it came out beautiful, I'd say very close to injection molded part look.
But in comparison to my regular printing speeds it's dreadfully slow.
(My go to print speed is 60mm/s)

Marvin usually takes 16mins on 0.2 layer height.
Marvin on 0.04 took me a bit more than 3hours.
I could have printed 12x Marvins instead!

Calibrating wise I do check calibration and relevel if needed once a week, that's roughly 100hours of printing.
I've bought one of those "laser feeler gauge" things to ensure its precise all across.
Also need to mention that I have manual bed leveling hack in place but if you have stock bed you can calibrate by sticking little paper pieces in the corners under the glass.
z offset you set pretty much once and forget about it. In my case I've set it to 0.2

I do hope this helps.

Regards,
Kris M