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Allow Slicing at Higher Speeds than 700 mm / s


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Posted · Allow Slicing at Higher Speeds than 700 mm / s

Hello, I'm using Ultimaker Cura for printing my 3D models. I've came up with a stabilization system for 3D printers, which allows printing at medium - high quality at high speed on my Creality CR-10 v2 printer. You can find more details about my project at

https://www.printables.com/model/1169247-ultimate-3d-printer-stabilization-upgrade-to-high

 

Currently, all my speeds except for initial layers are set to 700 mm / s during slicing and I'm manually tuning it up in the printer to 1.43. But I need to do it for every of my prints. When I try increasing the speed, it's not sliced.

 

It would be great if you'd allow slicing the models at higher speeds. Would that be possible?

 

 

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    Posted · Allow Slicing at Higher Speeds than 700 mm / s

    The maximum speed is set in the printer's definition file. These can be found in (default location in Windows) C:\Program Files\UltiMaker Cura 5.9.0\share\cura\resources\definitions. You can directly edit the definition file for your printer but if you do that it'll get reset with every new version of Cura you install.

     

    You can copy the file into Cura's configuration directory, just make sure you rename the file and change the name of the printer inside the file (i.e. my custom definition for the Ender-3 V3 SE is "ender3v3se_slashee.def.json" with a name of "Ender-3 V3 SE - Slashee"). If your printer has variants (you can choose the nozzle size, generally) then you'll need to copy the variants for it from the resources\variants folder into the variants folder in the configuration file, rename them and open the files and change the name of the printer they apply to.

     

    If those instructions seem too complicated - just edit the definition file in the install folder (unless you're running on Linux where editing the AppImage is very hard and I have no idea about macOS) and it'll take you two minutes every time you install a new version of Cura.

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    Posted · Allow Slicing at Higher Speeds than 700 mm / s
    59 minutes ago, mlemanczyk said:

    That sounds perfect. I'll create my own definition. Would it make sense to allow overriding them in the settings of the printer? Initially I was looking for them there.

     

    Thanks!

    Depends on the printer, if they're set any lower than that yes you will need to turn them up if you can as most printers will be set to be able to go as fast as possible out of the box. In the case of my E3V3SE, that includes ignoring acceleration limits set in the gcode so to turn down the maximum acceleration in the printer's settings 😠

     

    Also bear in mind that you'll probably need specialty "high speed" filament (I know you can get in PLA but I don't know about others) designed for printing fast - regular filament can take long enough to set that it gets pulled along as the print head zooms off. You'll probably want to set your cooling fans to 100% while you're at it.

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    Posted · Allow Slicing at Higher Speeds than 700 mm / s

    If you want to keep the boxes from turning yellow when you edit the speeds, you can over-ride the max value warnings as well.

    "speed_print": { "maximum_value_warning": 1000000 },
    "speed_infill": { "maximum_value_warning": 1000000 },
    etc.
    etc.

    There are quite a few of them.

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    Posted (edited) · Allow Slicing at Higher Speeds than 700 mm / s

    Got it. Thanks again! I'm using high-speed filament & high flow nozzle with 3 holes. This isn't really an issue. My primary issue is that I'm probably hitting power capabilities of my printer. I needed to lower bed temperature to allow increasing accels and speeds. I'm currently printing for the first time at 2500 accels. Model is sliced at 700 mm / s, but I tune it up to 357 in the printer. Increasing accels to 3000+ is causing layer shifts. I believe the stepper motors are failing due to the lack of power.

     

    TBH, there are small inaccuracies from the vibrations and forces impacting the print head, but I don't really see much of a difference in quality between 1000 & 2500 accels. I'm planning on stabilizing the print head, but I also need to increase the infill of my balls to go faster. Originally I was slicing all models at 40 mm / s, as slicing them at 100 mm / s was resulting in low / medium quality prints. My target was to be able to slice the objects at 500 mm / s, so I already bypassed that. I'm still learning how the speeds & accels work, as this is my first time doing anything around that.

     

    P.S. The primary difference between 1000 accels & 2500 is the loudness xD

    Edited by mlemanczyk
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