Eleven. Take away your design and Verify the layer swap. The product should have swapped colors at the right layer, and you should have a two color print that came from an individual extruder 3D printer. It involves pausing the print mid-way and swapping just one filament for one more. https://dominatrixcam32170.blogkoo.com/the-2-minute-rule-for-multicolored-3d-printer-49278908