Multiple Colors with a single Extruder - Printrbot Metal Simple (SD Card)

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To interrupt the print process and manually switch filaments or colors, I issue specific G-code commands. The first step involves positioning the print head at coordinates 190 along the X-axis while keeping it raised by about 15mm above the build platform. This movement is executed with a G1 code followed by the necessary parameters: G1 X190 Z15. Next, to allow time for the filament switch, I use a G4 code with an S30 parameter. This command tells the printer to pause its operation for precisely 30 seconds. The duration is crucial to ensure that both extruders are disconnected from the current filament before a new one is loaded.