Cannot achieve proper quality with 50 microns
Last week I assembled MK2 kit myself and facing issues when I print with 50 microns as in the attached picture(blue color marks on the frog are some inks from a pen and nothing come out with the print). In 200 microns, it prints with a good quality. Part of the frog that you see in the image was printed using the gcode in sd-card. I am using the PLA filament which came with the kit. Tried recalibrating etc. and seems calibration is ok, but the print quality is still the same.
Can't we get better print quality under 50 microns using the default nozzle (0.4mm) ? Or do you see any reason behind that?
Re: Cannot achieve proper quality with 50 microns
Printed at default speed or did you slow it down any?
Yeah, its that guy... 3D Nexus
Re: Cannot achieve proper quality with 50 microns
Frog was printed directly from the gcode provided in the SD card. So, I assume it prints with whatever the settings embedded in that file, so no speed change.
The other object was sliced and printed using Slic3r and 0.05mm default settings which comes with prusa software bundle. I also tried it by reducing the speeds to 50% and 25% of the values in the default settings, but no luck.
Also tried using Cura and MK2 settings, again similar results. But if it is printed with 0.2mm settings, then it prints with 0.2mm quality level. Issue is only with 0.05mm and 0.1mm settings.
Further, calibration and live z value adjustments(tried with .050mm increments) also didn't make it any better.
Re: Cannot achieve proper quality with 50 microns
Is the part fan (the one at the front) running during the print?
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Cannot achieve proper quality with 50 microns
Yes, both fans are running during the print.
Re: Cannot achieve proper quality with 50 microns
OK, in that case try printing the Prusa logo (again) to see if that prints without issue.
You may have a filament feed issue, and something simple like the logo will confirm.
Peter
Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…
Re: Cannot achieve proper quality with 50 microns
Did you mean to slice and print the prusa log with 50 microns. AFAIK, default prusa log prints with 200 microns and 200 microns works properly in my machine.
Re: Cannot achieve proper quality with 50 microns
I had the issue of having elephant foot on every print. In the hangouts they suggested to do again the Z live ajust and take the nozzle up a bit. This solved a quite simmilar issue I had in another print with 100um layers. Even while my treefrog was printed ok with the first setting of the Z axis I'd suggest to check that.
Reason: If you nozzle is too low the nozzle will always press against the print and therefore will squeeze away the already printed material.
What puzzles me is the blue colour in your white print. What the heck caused that? 😯
I'm now to 3D printing since a few weeks. So I'm not an expert by any means! Its just a suggestion from what I see in your picture. 🙂
Re: Cannot achieve proper quality with 50 microns
Printing with the nozzle too low on the initial layer will only affect the initial layer - and possibly the next if there is too much squeeze out.
The height of the filament is directly related to the height of the nozzle. After a layer, the next will be previous height plus the layer height and the nozzle will again flatten the filament accordingly.
Without this flattening that the nozzle does you would be printing perfectly tubular threads of filament and get virtually no layer adhesion
Re: Cannot achieve proper quality with 50 microns
I'm not sure what causes this either. FWIW, I had the same exact problem when trying to print the frog from the SD card gcode.