Kisslicer MendelMax 1.5 and sharp corners!

[GeckospotNixie]

This is the issues that I have had with Kisslicer since I started using it back in May of 13.

If the part has a sharp corner anything that does not have a radius on it.
I get this bulb on the corner (see photo) or sometimes the corner is good but surface next to the corner has a ripple in it.   
If I use S3D slicer the corners are good no bulb or ripple.
In the photo the part in the foreground is the KS part and the part behind is s3d.

Cakeller98
In the other topic you were talking about the print speed and the jerk setting.
I don’t think that the speed is to high if I'm remembering correct it was at 50mm/s.
But you were also talking about the jerk setting I have worked that before and it did not help but I'm happy to go back and look at it again.
I thought that there were two setting that go hand and hand jerk was one but I don’t remember the other?
I will look tonight at what my jerk setting is.
What is a good starting point or range for the jerk setting?
You also requester to see the g-code file I will post them tonight.

Any help will greatly appreciated thank you all.

GeckospotNixie

[cakeller98]

hi,

it may not be the jerk or acceleration settings. (the two that go hand in hand, I think)

it will be very helpful to first look at the two gcode files for comparison.  

especially if there is a substantial difference in print time.

I've seen those ripples, and they are more pronounced (in my experience) when running faster.

So what I was suggesting was that S3D might be slowing down into the corners to prevent this from happening.  

one thing I noticed in S3D in the profile is that it defaults to printing perimeters at 50% speed.  

so if your default speed is 50mm/s (3000mm/min) then your perimeters, which is where this is happening, would be printed at only 25mm/s (1500mm/min).

In Kisslicer you can do exactly that same thing with the Printer->Speed->Perimeter and just make sure that is 50% of the other two speeds... IF that's what's doing this.

good luck.  and my apologies if none of this is helpful for your issue.

[toranarod]

I was always get the same problem.  I stooped it by upgraded the extruder and the nozzle to a much sharper point and a .4mm outlet

 I never saw it as a software problem it always looked like a nozzle tip was dragging the plastic around.    

[cakeller98]

I can see that having an effect for sure.

[Clinton Hoines]

I'm not sure going down in nozzle size is necessary, I was having the same issue trying to calibrate a friends 400mm dia Deltabot with a .75mm hotend. It finally came down to about 3% too much plastic being extruded. This is was with ABS and the corners looked worse than the OP picture they are now very nice with no bulging that is with a jerk setting of 60.

I would try and tweak your temp settings and filament flow before anything else.

[lonesock (Jonathan)]

Hi.

I think a zip file of some sample G-code would be very helpful, with the G-code "Include Comments" enabled (it is enabled by default).

thanks,

Jonathan