Pathio Users

Hotend and bed not heating?

Hi, thought I’d try a print job using pathio instead of Simplify 3D. I run a home built BLV mod printer with a Duet Wifi and E3D Titan Aero.

Pathio slices fine, retains the settings for the extruder and bed temp in the relevant menus but when I upload the gcode to the duet and hit print it starts trying to print without waiting for the bed or hotend to heat up…

What did I miss?



Hi @Dashik,
Seems like you’ve got the same problem as was described in this thread: Extruder not heating

Take a look and let me know if that solves things. If not, send along your starting gcode script and we can troubleshoot together


You will need to add something like this to your start script. This will tell the head and bed to heat up at the start of your gcode program.

M104 S{{ nozzle_temp_0 }} ; Set nozzle temperature
M140 S{{ bed_temp }} ; Set bed temperature

M109 S{{ nozzle_temp_0 }} ; Ensure nozzle has reached temperature
M190 S{{ bed_temp }} ; Ensure bed has reached temperature
G28 ; Home all axes

Then in your ending script you will have to add something like this to turn off the heaters in the bed and head. Your printer may need other things depending what it is to probe the bed maybe.

G1 Z5 F20
G1 X0 Y0 F3000
M104 S0 ; turn off temperature
M140 S0 ; turn off heatbed
M107 ; turn off fan
G1 X0 Y200; home X axis

This what i use as the start script. It works well.start