Benchy Oddness
Hi,
I got my MK3 up and running did a few prints and was very happy with them.
Then I tried to print a Benchy and the prints came out very well except for an aberration on the lower part of the bow.
The one on the left is from the SD card shipped with the printer. The one on the right was sliced on the latest and greatest Prusa Control. I sliced with OPTIMAL settings and nothing else changed which I think should match the resolution of the file on the SD card. The newly sliced version reduced the amount of aberration but it did not disappear entirely,
Any idea what might be causing this?
Cheers!
Kevin
Re: Benchy Oddness
Benchy is a test...look for xray's profile for s3d...he nailed it.
Re: Benchy Oddness
That first layer made me cum...a little.you found the sweet spot.
Re: Benchy Oddness
It mostly has to do with the rate of the said plastic cooling/solidifying and mass of material cooliing. I'm a foundryman be trade but plastics have their own learning curve.
Re: Benchy Oddness
Based on comments on other threads I downloaded the latest release candidate for Slic3r Prusa Edition (1.35.8 I think).
Slicing Benchy with that and printing still has the aberration on the bow but it is smaller now.
I think I will try some other slicers and see if they help.
Re: Benchy Oddness
This is a cooling problem, try to incease the fan speed.
Thomas
Re: Benchy Oddness
This is a cooling problem, try to incease the fan speed.
I had started thinking along the same lines, but the fan speed is almost at full tilt already. On the tuning menu the fan speed reads between 247 and 252 and the max is 255.
Examining the cut away in the slicer I was thinking that maybe the bow wasn't getting enough support from the infill. I switched the infill honeycomb and the aberration was reduced drastically. Still a hint of it there, but I think if I just drop the temperature down a few degrees that might sort it out.
I'm still concerned that the pre-sliced gcode on the SD card doesn't work. I'm hoping something else weird isn't happening like the thermistors have decided to start lying to me or something.
Re: Benchy Oddness
Benchy is a test...look for xray's profile for s3d...he nailed it.
Where can i find his s3d profile?
Re: Benchy Oddness
I also had this, solved it by decreasing the speed, having slow speed for the outerline.
See here for more details https://discuss.toms3d.org/viewtopic.php?t=252