The SM2 is my first printer so i only know how to use Luban as a slicer. Recently i tried Prusaslicer 2.3.0 because i wanted to play around with some more advanced options. I found some config files on the forum and used those. The first print in PLA worked fine. Now with my second model i encounterd a problem with i never had in Luban.
I wanted to print a little bowl/shell and went from 0.2 mm Layer hight to 0.1 mm. I saw that the single lines got much smaller and more narrow. Like my wall thickness is 1.5 mm and am used to that Luban just makes 4 perimeters of around 0.4 mm width. Now in Prusaslicer i got with 0.2 mm like 8 perimeters and with 0.1 mm i now have 8 perimeters with a lot of infill.
The print with the gcode of Luban worked perfect and it stuck perfectly to the printbed.
The print with the gcode of Prusasclicer stuck to the printbed but i canceled the print on the second one because it looked awfull because the nozzle destroyed the already printed layer.
It just seemed like these Lines are way to narrow and i would like to have a sliced model as in Luban but with features like ironing and diffrent infill…
Luban:
Layer hight: 0.2 mm
perimeter: 4
Layer hight: 0.1 mm
perimeter: 4
Prusaslicer 2.3.0
Layer hight: 0.2 mm
perimeter: 8
Layer hight: 0.1 mm
perimeter: 8 + infill
Took 3 Screenshots to somehow show what happened. I don’t even know how to call that issue to google about it.
Thats a TPU profile you are using. Are you printing with TPU, if you are it’s not easy and most people increase the layer height for TPU as it will never give you a super smooth finish.
Don’t know what all the settings are but a TPU profile won’t work well for PLA.
It’s also best to use layer heights that are multiples of 0.04mm so tif you want about 0.1mm try 0.12mm.
The print worked perfectly fine with my pla settings with the luban gcode with 0.1 mm layer hight.
The Ninjaflex Cheetah TPU is quite forgiving.
It is going to be a TPU project but first i wanted to fix the slicing issue.
Is there e parameter that is causing this?
I also downloaded cura and it sliced it the same as Luban did.
Somehow the layer hight is affecting the layer width.
Thx for that article, i already read through that today. I just can’t find an explanation why i get with 0.2 mm layer hight 8 perimeters with like 0.2mm width and on 0.1 mm 8 perimeters of like 0.1 mm + 0.8 mm infill.
Maybe i will try in the Prusa forum, i just don’t get how i can get a better result with Luban than with Prusaslicer.
I’m just trying some stuff, maybe i will go back to 0.2 mm in the end.
I think it’s the thickness of the wall plus the thinness of the layer. Thin layers tend to be less strong as there is more layer join (week) and less solid layer (strong). So Prusa gives you more walls and less infill.
Might be work posting a question on the Prusa forum. Would be interested in their response.
The best way to debug these is to save your project file (file>save as). That saves a 3mf file. The 3mf contains the model and all your settings. It allows us to slice exactly the same as you and look for problems in all the varied settings. To attach a file to the forum though you need to zip it into a zip archive as the forum is picky on the file types it allows.
With that being said can I ask where you got your snap maker profile from ? I ask as we had another poster also having strange issues with his slicing. Turns out he had downloaded a few profiles and was using them. Those profiles look wrong when I looked at the internal ink structure and contained settings in the printer section that are normally in the print and filament sections. As such it was over riding all sort of settings it shouldn’t do no matter what was set in the print settings.
Also one thing you should know even with a normally working profile that setting a % setting on widths means it is calculated over layer height, not nozzle width. It’s counter intuitive but it is mentioned in the tool tip for those settings. As such when you have a low layer height it will make your extrusion widths also thin. It’s far better to set a specific width for the nozzle like the Prusa profiles do.
The second part with the % instead of fixed widths caused it. Everything was explained in the post you gave me and which i read like 3 times and did not understand what it actually meant.
Pleased you got to the bottom of what was happening. Although I knew the layer width changed with layer height I didn’t know about removing the % to get absolute values. very useful thanks.
Hi
“Re I found some config files on the forum and used those.”
Can you help with a link to the Profile.
I’ve been searching and not finding…
I’m also trying to make my own
Can’t even find what Firmware Snapmaker uses.
ie.
RepRap/ Sprinter
RepRapFirmware
Repetier
Teacup
MakerWare (MokerBot)
Marlin
Sailfish (MokerBot)
Mach3/linuxCNC
Machinelcit
Smoothie
I have no idea where I found the profile, but it turned out to be a little odd. I switched to cura and got way better results. (Snapmaker profiles are supported by default)
Snapmaker uses Marlin afaik
Hi yeah okay that’s cool thank you.
I’m keen to examine some of the features of the prusa which include which has been deposited.
I have been using cure and it’s been good only I want to just have a look at other options.
If necessary I will install my own mother board & driver control circuitry for the linear rails and extruded of the snapmaker
