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Is there a way to make the printer auto heat the extruder and bed?

Hello, I was wondering if there was a way to make my printer’s extruder and bed to auto heat up before initiating the Palette 2S Pro setup process when I initiate a print. After playing around with the P2SPro for almost a month, I noticed it was a bit tedious having to auto heat-up my printer’s bed and extruder when in the code it should automatically do it, but the P2SPro pauses all the pre-printing setup code for my printer until the whole palette setup is done (including loading in filament onto the extruder, purging the past material, and introducing the new material (which need the extruder to be hot in order to do so). I am using CURA and Chroma as the slicing software. I would really appreciate the help or any feedback as to if it is possible to manipulate the code or so on so forth.

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Hey @jgc, thanks for reaching out. When you are in accessory mode (using Palette without a Hub), there is no communication between Palette and your printer. They are physically connected via the outgoing tube, and when you start the print on your printer, Palette will make filament as the extruder pulls it. The MAF file you load onto Palette does not affect the printer. To change how the printer heats up the bed or the nozzle, you will have to change the GCode sequence in your slicer (Cura) before importing it into Chroma. I found this blog post here that explains how you can change the sequence to make the bed and nozzle heat at the same time, which should be more efficient. I hope that helps for now and please let me know if you have any more questions about this.

Update (12/02/2020)

Hi everyone, I just wanted to provide an update on this - the Hub team is aware of the issue, but unfortunately currently it is not possible to achieve this. However, it is likely possible with some adjustments. We will update this forum post in the future when this becomes available. Thanks for your understanding.

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This makes no sense. The Palette is printing using Octoprint, when in Octoprint and hitting the print button to start a print, the Palette plugins pop up boxes to tell you what to do. Either it could have allowed the preheating before a box popped up like a normal print, or it could send the code to terminal like it normally would in a print. It make no sense that it would pop up a box that tells you to go do it manually. That is the point of Octoprint in the first place.

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Hey Scott, sorry for any confusion - I assumed you were in accessory mode (not using a Hub). Could you provide the GCode from Cura as well as Chroma to support@mosaicmfg.com so we can take a look at your start sequence? Thanks!

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Any update on this? I would also like to avoid having to manually heat the printer at the start of every print. Moreover if you’re working with different materials (e.g. TPU, PVA) it is too easy to make a mistake and heat to an incorrect bed or hotend temperature. For some low-temperature materials this could cause carbonization and jamb the nozzle.

The best/simplest solution would be for Canvas to leave a copy of the non-blocking preheat commands (e.g. M104, M140) before the Palette-specific start code. That way the hotend will automatically start heating when the print starts and nothing else should be affected. I’m going to test that that works and will update this discussion.

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Sorry I should have made clear I meant when the Palette is controlled in connected mode via the Hub/Octoprint.

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Hey Larry, could you send your mcf.gcode file to alina@mosaicmfg.com? We'd like to take a look at the commands. Thanks!

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John Gonzales will be eternally grateful.
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