Jump to content

Support Overhang Angle


curasurf

Recommended Posts

Posted (edited) · Support Overhang Angle

I studied the recommended Cura profile of Ultimaer S3 / PLA 0.4 nozzle / Draft Fast 0.2mm:

                       Layer height: 0.2 mm

      Outer Wall Line Width: 0.4 mm

Support Overhang Angle: 60°

 

To my supprise, Support Overhang Angle is NOT a calculated value!

 

My printer is Creality CR-10sp. In all its profiles Support Overhang Angle is calculated from a formula. My experiments also show that the formula is a sound choice. According to this formula, the Support Overhang Angle for the Ultimaer S3 profile should be calculated as:

 

  • Support Overhang Angle = atan(0.4×50% ÷ 0.2) ÷ 3.14159 × 180 = 45°

 

So the recommended angle 60° for Ultimaer S3 would surely lead to failure. Hope to know what you think about this. Thank you!

 

Edited by curasurf
  • Link to post
    Share on other sites

    Posted (edited) · Support Overhang Angle
    30 minutes ago, nallath said:

    As far as I know a 60deg overhang is perfectly printable on an S3.

     

    @nallath   According to the recommended profile Ultimaker S3 / PLA 0.4 nozzle / Draft Fast 0.2mm, the picture would be:

     

    Layer height = 0.2 mm

    Line width = 0.4 mm

    Overhang angle = 60°

     

    Do you think it's ok?

    Image.png

    Edited by curasurf
  • Link to post
    Share on other sites

    Posted (edited) · Support Overhang Angle

    It seems to be magic for some Ultimaker profiles. I know that disabling "Outer Before Inner Walls" would give some help, but it's really magic.

     

    Ultimaker S3 / PLA 0.4 nozzle / Draft Fast 0.2 mm
              • Layer Height = 0.2 mm
              • Outer Wall Line Width = 0.4 mm
              • Overhang angle = 60°

                        Image.png

     

    Ultimaker S3 / PLA 0.4 nozzle / Default Fast 0.2 mm
              • Layer Height = 0.2 mm
              • Outer Wall Line Width = 0.35 mm
              • Overhang angle = 60°

                        Image.png

     

    Ultimaker S3 / PLA 0.8 nozzle / Default Extra Fast 0.3 mm
              • Layer Height = 0.3 mm
              • Outer Wall Line Width = 0.75 mm
              • Overhang angle = 70°

                        Image.png

     

    Ultimaker S3 / PLA 0.8 nozzle / Default Sprint 0.4 mm
              • Layer Height = 0.4 mm
              • Outer Wall Line Width = 0.75 mm
              • Overhang angle = 70°

                        Image.png

    Edited by curasurf
  • Link to post
    Share on other sites

    Posted · Support Overhang Angle
    On 2/25/2021 at 12:18 PM, curasurf said:

    Ultimaker S3 / PLA 0.8 nozzle / Default Sprint 0.4 mm
              • Layer Height = 0.4 mm
              • Outer Wall Line Width = 0.75 mm
              • Overhang angle = 70°

                        Image.png

     

    I wonder whether somebody tried this profile with S3 printer. It's unbelievable.

  • Link to post
    Share on other sites

    Posted · Support Overhang Angle

    Looking at your sketches the max should be about 63°.  This is 60° then 70° on the Ender3P.  The 60° looked spot on.  The 70° had consistent sagging of .5 to .8mm once it got away from the transition point.  My fan works quite well.

     

    DSCN2580.thumb.JPG.18c2fa3f9316acbec2f903abb667448c.JPG

    • Like 1
    Link to post
    Share on other sites

    Posted · Support Overhang Angle

    Hi @GregValiant   Thank you for your experiment and comment! You are always helpful!

  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • UltiMaker Cura 5.7 stable released
        Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more. 
         
          • Like
        • 7 replies
      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
    ×
    ×
    • Create New...