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chickenboy115

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  1. So I have my start gcode set to warm my bed to a specific temperature before heating the hotend and bed to the final temperature. I was wondering if there is a way to set this first temperature as a variable relating to the final temperature instead of only being able to set an exact number. Eg, my current gcode is below: M190 S55 ;Preheat bed to 55C M104 S{material_print_temperature} ; begin heating nozzle to final target M140 S{material_bed_temperature} ; begin heating bed to final target G28 ;Home M190 S{material_bed_temperature} ; Wait for final bed temp M109 S{material_print_temperature} ; Wait for final nozzle temp This works fine until I switch filaments that have different bed temps and forget to edit the start gcode. I'd like to do something like this: M190 S{material_bed_temperature}-10 ;Preheat bed to 10C below final target Is it possible to do math in the start gcode? I saw a couple older posts saying no, but not sure if that changed in recent updates. If not, is there some way to do this with a post processing script?
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