Dual color shell with dual extruders possible?

[LambdaFF]

A classical bi color process is to merge 2 STL into an AMF.
If you have the skils, you define the inner shell and outer shell as 2 different parts.
If you don't, try and do the following :
- original model is #1
- scale your vase to a smaller scale, try 95%. This is #2
- do a boolean operation to substract #2 from #1. This is #3
- Create an AMF by combining #2 and #3.
All these are doable in Meshmixer.

Just check in the end that you respect the basics : minimum thickness...