thanks for the reply. i have selected sequential printing and set radius 1 and height of 1. i have only added 2 units to the build table just to try it and it won’t even let me export gcode for two. this is what clued me into the problem, since i can spread the two pieces at opposite ends of the table and it still gives the error.
my plan for 40 is to lay them out sequentially, export the gcode, import it into pronterface, look at the tool path, and make sure it is moving from front left corner to back right corner. this will ensure no collision issues.
first things first though, i need to get rid of this error message regarding the height, which as i said, i know is truly a false alarm because it won’t even let me export gcode for 2 units. the parts are basically 6mm x 20mm x 25mm cubes.