Can two color print models overlap?

[plaa 2]

I understand that to print with two colors you need to load the model as two separate designs and assign both models to a particular extruder.  What I couldn't find anywhere is whether the two models can overlap each other or whether they must be complements of each other?  It would be much simpler if the models could overlap and Cura would handle the rest rather than having to handle it during modeling – useful for example for adding text to some object.  If the models can overlap, which extruder is picked for overlapping parts?

 

I tried a quick test using two boxes, and it seems that the overlapping parts are filled 100% with alternating colors. 😳  Can this be controlled somehow?

 

 

 

 

 

Edited March 29, 2021 by plaa

[plaa 2]

Finally found the settings that control these:  Remove Mesh Intersection will prevent overextrusion by removing the overlapping parts.  Alternate Mesh Removal controls whether one (apparently arbitrary) model is printed or whether both are printed by alternating layers (to make the bond firmer).

[geert_2 557]

Out of curiosity: have you tried, if you use different transparent colors, let's say blue and red, does it then get the subtractive mix color purple?

 

[kmanstudios 1,120]

I did this a while back. I will try to find the photos or make new ones and post the results here. I just checked and they are not on my list of previous attachments.

 

Edit: found the photo. This was way back in my early printing days when I was just doing anything to learn about printing and playing with ideas.

Edited March 31, 2021 by kmanstudios