u/Almaamoun_88

Is it possible that every layer time change in the print when geometry and size change will cause artifacts??,,, this drives me crazy and this is my number 1 and only issue that destroy my prints.

Printer is clone prusa mk3 that is well tuned and calibrated and working flawless.

Using bambu studio here, In this model, as you can see theres is a very large time difference due to switch to internal infill, about 400 sec difference in layer time,, this makes a very visible artifact 😭

I have tried “dont slow down for outer walls” and difference in time is still the same, playing with speeds can slightly reduce time difference

My settings are :
Matte PLA that prints very well at 195C, bed is 50C
0.4 mm nozzle
0.4 mm outer wall
0.45 mm inner wall
2 walls used here
Inner wall speed 50
Outer wall speed 25
Sparse infill speed 200
Internal solid infill 200
Top surface speed 50
Using fuzzy skin here

The only way to reduce time difference by increasing speed of internal infill to 400 mm/sec which is super high for my printer and will still have a huge gap in time..

I am not sure what to do but this doesnt make sense..

Any ideas 🙄

Hello every one

I am having a very weird issue that ruins all of my print and is not predictable, it can be identified as layer shift but it is not, it is happening at the start of the layer, the print can start very fine and as the geometry and area of the model change it can make this problem..

Printer is DIY with E3D hot end remote extruder, using Cura for slicer, maybe i messed up with the settings

In the attached photos , the rest of the print is very good

PLA+ @ 195 deg and 50 deg for the bed
0.4mm nozzle
0.28 layer height 0.4 line width
Outer wall inset 0.1mm
Wipe distance 0.2 mm
Outer wall flow 105% (only for higher layers)
2 walls printed
Grid infill 15% infill printed after walls
50mm/sec speed
Retraction 4mm retraction speed 25
Retraction prime amount 0.1 mm3

Originally retraction was set to 6.5 mm but i am tweaking it because of another issue which still present, getting gaps after retraction happen with a popping sound from the nozzle.

The above brown model is 0.28 layer height,, the same strange problem of this layer shifting also happen in 0.2 layer height, which is the model in pink color, also happening but in higher resolution because of smaller layer height..

That said, some times i get flawless prints 🤷‍♂️