Dragon Quest Slime Coaster - single extruder

thingiverse

This coaster can be printed on a single extruder printer by editing the g-code to pause the print at the different layers and changing the filament. To do this in Slic3r slice the model like you normally would, select the print preview tab and choose edit g-code. Use the show layer range visualizer to find the layers where the color would change (clicking the first/last layer button goes to the line of code) and insert a '@pause' command in the g-code. Slic3r will pause at these layers so you can change the filament color.