i have toyed with this thanks. my question is how do i get it to stop so i can change the filament? is it such where i make one process and have it stop at x layer height. then i start the next process manually and its starts at that x layer height? if so what about the rest of the coordinates on the build plate dont i have to direct the printer to start printer exactly where it left off and if so how?

or do i have both processes in one file and process one prints and the second process doesnt start until i tell it too?

thanks for the help.