In Prusa I have this line:

START_PRINT EXTRUDER_TEMP=[first_layer_temperature] EXTRUDER1_TEMP=[first_layer_temperature] BED_TEMP=[first_layer_bed_temperature]

And in Klipper I have this as part of the start code:

gcode:

{% set BED_T = params.BED_TEMP|int %} # First layer temperatures.

{% set EXTRUDER_T = params.EXTRUDER_TEMP|int %}

{% set EXTRUDER1_T = params.EXTRUDER1_TEMP|int %}

M140 S{BED_T} # Don't wait.

M109 S{EXTRUDER_T} # Set and wait for left extruder to reach printing temperature. Wait.

M109 S{EXTRUDER1_T} # Set and wait for right extruder to reach printing temperature. Wait.

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and when I start a print the first extruder heats up but when the second extruder is about to print I get the error that hotend is to cold. I would expect that both hotends was heated from the start or that the second one started heating up a little before it is needed.

What is this problem?

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