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(edited)
· Finish the hole horizontally with Cura 4.13
The Maximum Accel for Creality printers is usually 500 and the Jerk 8. I generally print PETG at 35 with the outer walls at 30. Keeping the outer wall speed lower helps abate the bouncing around corners.
In that photo you can see on the right edge that the printer bounced going around that corner as well. If you lower the Accel too much you might have problems going into a corner as the extrusion will stop farther from the corner. Maybe a small chamfer on the holes would help.
Part of this is the printer (any printer) as the belt tension and any slop in the mechanicals always show up in a print. As I recall, the belts on the Ender 5 are pretty long. It doesn't take much stretch on starts and stops to cause a little bump like that.
On another note - you might have some under-extrusion going on. I print a lot of PETG on my Ender 3Pro as most of my stuff is functional prints and the finish looks a lot different than that one.
Here is a PETG print and you can see a bit of ringing as it came around the corner on the right, and then again after the left hole. In my case I know it's the printer. That's about as good as I can tune it. (The rough edge on the top radius was where the support was.) The print speed was 35, outer walls at 30, 0.4 nozzle, 0.2 layer and 0.4 line width, 240 hot end, 80 bed.
Edited by GregValiant
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GregValiant 1,330
The Maximum Accel for Creality printers is usually 500 and the Jerk 8. I generally print PETG at 35 with the outer walls at 30. Keeping the outer wall speed lower helps abate the bouncing around corners.
In that photo you can see on the right edge that the printer bounced going around that corner as well. If you lower the Accel too much you might have problems going into a corner as the extrusion will stop farther from the corner. Maybe a small chamfer on the holes would help.
Part of this is the printer (any printer) as the belt tension and any slop in the mechanicals always show up in a print. As I recall, the belts on the Ender 5 are pretty long. It doesn't take much stretch on starts and stops to cause a little bump like that.
On another note - you might have some under-extrusion going on. I print a lot of PETG on my Ender 3Pro as most of my stuff is functional prints and the finish looks a lot different than that one.
Here is a PETG print and you can see a bit of ringing as it came around the corner on the right, and then again after the left hole. In my case I know it's the printer. That's about as good as I can tune it. (The rough edge on the top radius was where the support was.) The print speed was 35, outer walls at 30, 0.4 nozzle, 0.2 layer and 0.4 line width, 240 hot end, 80 bed.
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