I have a model (2.5mm height) using blue PLA.
I have painted such that everything above 1mm (i.e. 1-2.5mm) is to be printed with white PLA.
After slicing, 12 filament changes are necessary.
I don’t why this is. What can I do to minimize the filament changes for this simple model?
Hello @JM_Assoc 
Welcome to the Creality Forum…! 
You’d probably have to show us a picture of the model and how many colors it has. Sometimes it helps to change the orientation of the model on the build plate to lessen the filament changes.
If you have a 2.5mm height and are printing with .20 for each layer height which would be a total of 12 layers after it’s sliced with a color change on each layer.
If you change it to .24 it would be 11 layers.
.28 would be 9 layers.
there should not be a color change on each layer. layers 1 & 2 are blue. layers 3-19 (0.12mm layer height) should be only white. Thus I expect only one layer change.
I looked at the sliced model again and it does not make logical sense on how the slicing was completed. Either there is something in the model that results in the blue filament being needed within the white layers or the software has problems.
Can you try to paint using the “layer height” tool and see if it does it right this time..
I assume you mean the “height range” tool type?
That’s what I did originally.
This has to be a slicer issue. The bottom image shows white being used at layer 5 which is at least 5 layers below where one would expect it. In fact, blue is extruded on layers 6 & 7 and then again white up until the top layer. The placement of the white filament within the model makes absolutely no sense.
Yes that is strange. Not sure why it does that. I’d try to make small changes in the slicer settings. For example infill or other settings and see if it affects it.
I’d just try a different slicer. It it’s output makes more sense, then use it. I know, you might have to move the physical card around, but…???
I have tried different slicers with the same result.
The solution is to:
-not use the paint feature. slice and then click on the layer and change filament there
-use the paint feature. edit the G-Code: delete the filament changes when unnecssary
I am still waiting for Creality CS to get back to me with their solution.
