A way to heat bed and end at same time?

What is the problem?

Looking for a way to heat both (bed and end) at same time when i start a print. I know this take more current but it's ok for me.

What did you already try to solve it?

I looked in preference but i didn't find anything about this

Thank you


This is defined by slicer, so you should look for an option there.

I can also throw a plugin at you that might help :stuck_out_tongue_winking_eye::

Preheat button for your currently selected file

There's also this new button in the newer OctoPrint versions, that allows you to set both at the same time.



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Thank you guys :slight_smile:

Keep forgetting you added that in!

Edit: Now not sure if that was you, but either way forgot about it :roll_eyes:

There are two distinct G-code command for heat and heat-and-wait. You can set the target temperatures for the hotend and bed with the no-waiting variety and after this send the commands that wait.

I have in cura the following command in the start G-code

;*** Start Preheating ***
M140 S{material_bed_temperature_layer_0} ; start preheating the bed
M104 S{material_print_temperature_layer_0} T0 ; start preheating hotend
;G28 ; home
M190 S{material_bed_temperature_layer_0} ; heat to Cura Bed setting
M109 S{material_print_temperature_layer_0} T0 ; heat to Cura Hotend setting
;*** End Preheating ***

With this the heating of hotend and bed runs at the same time. Way faster than one after the other.

It works thank you. I copied your command at the beginning of start-g command.

jandar, I've never seen the hotend heat faster than the bed, so M140, M104, M190 should be enough. (I have that set in Cura, and never had a print that tried to start before the hotend had been up to temperature for a while.)

It always does on my MK2.5S and the Formbot T-Rex 3.
That's where Smart Preheat coms in.

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I've never seen the hotend heat faster than the bed

I had it today. With only a few minutes between prints the hotend was cooled down and the bed not so much. As the bed arrived at the target temp the hotend was missing 30 degree Celsius. Omitting M109 doesn't give any advantage but makes problems more probably, so why do it?

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I said that backwards, Ewald, didn't I? I've never seen the bed heat faster than the hotend.

jandar, I've never been in that situation - I guess you have a valid point.