Jump to content

Support Horizontal Expansion in 5.4 doesn't seem to work correctly when set to 0.0


DickQuaif

Recommended Posts

Posted · Support Horizontal Expansion in 5.4 doesn't seem to work correctly when set to 0.0

When I set horizontal expansion to 0.0 it still expands some supports and leaves print in mid air.  Some support structures are actually missing.  See attached project.  This worked fine in 5.2.2.  With 5.4 I have to expand the support to 2.0 to get an acceptable print file with no mid air printing.  No expansion is actually needed for this print.

LuxSensorCase_V2C-Body.3mf

  • Link to post
    Share on other sites

    Posted · Support Horizontal Expansion in 5.4 doesn't seem to work correctly when set to 0.0

    You might have run into the "Brim Bug".

    If you have "Support Brim" enabled and you have "Build Plate Adhesion" set to "None" then the Support Brim isn't printed (Prime Tower brim isn't printed either).

    There have been a couple of reports of that behavior on Github.

    A fix is to enable the Skirt with a line count of 0.

    You will get this

    image.thumb.png.005b190a7e05edf0a89577ce5bf2255a.png

     

    Instead of this

    image.thumb.png.fbc73723fac2000424ebc0e35321db90.png

     

    Without the Support Brim to rest on the support structure that is printed on Layer:2 is hanging in the breeze.

    • Like 2
    Link to post
    Share on other sites

    Posted · Support Horizontal Expansion in 5.4 doesn't seem to work correctly when set to 0.0

    I'm seeing this too.

    If you use a prime tower, no real brim is there.  I've had 2 prints fail since the prime tower got knocked over.  Using Ultimaker default profiles for UM Tough PLA and PVA support.  

  • Link to post
    Share on other sites

    Posted · Support Horizontal Expansion in 5.4 doesn't seem to work correctly when set to 0.0

    My problem is actually higher up. There is a shallow slot on the inside of the right wall that should have a support structure in it.  In 5.3 and 5.4 it’s missing and replaced with a small loop that is in mid air.  I expected that if the expansion was set to 0 it would be the same as 5.2 but it’s not. If I increase the expansions to 2mm I get printable supports for the loop and the nearby hole but anything less is unprintable. Even with a support , the loop is not actually doing anything. Rev 5.2 works well and I have gone back to it for day to day work. 

  • Link to post
    Share on other sites

    Posted · Support Horizontal Expansion in 5.4 doesn't seem to work correctly when set to 0.0

    This is in 5.4.0 with no Horizontal Expansion and the "Support XY Distance" at 0.20mm.

    That feature looks to be about 1mm deep so it isn't easy to build support on such a small shelf.

    Your Minimum Support Interface area is 10mm and you might want to lower that.

    image.thumb.png.fe9afccbf4a0e5581a207268c2732f51.png

    • Like 1
    Link to post
    Share on other sites

    Posted · Support Horizontal Expansion in 5.4 doesn't seem to work correctly when set to 0.0

    Since it was still loaded...

    This is with "Interface Density" at 70% (gives it more of a zig-zag even though it's a grid), overhang angle 60° (to get away from the chamfer in the big part of the hole), Bottom Distance = 0.4mm (2 layers so it will break free easier).

    image.thumb.png.1403680e5777c905542c52ce0ab33cfc.png

  • 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

      • Introducing the UltiMaker Factor 4
        We are happy to announce the next evolution in the UltiMaker 3D printer lineup: the UltiMaker Factor 4 industrial-grade 3D printer, designed to take manufacturing to new levels of efficiency and reliability. Factor 4 is an end-to-end 3D printing solution for light industrial applications
          • Thanks
          • Like
        • 3 replies
      • 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
        • 26 replies
    ×
    ×
    • Create New...