Hey,

Still fairly new to this hobby and have lots of ideas but I’ve got a snag with a few prints now and was hoping someone could help me work out what I’m doing wrong.

The project is small trays for a custom advent calendar but as you can see the corner on the second picture has lifted massively.

A 3d printed tray in grey with a handle.

This has happened before with a different print too and I never solved that issue either.

Using an Ender 3 Pro with some generic filament from amazon, hot end at 200C (goes stringy any higher), bed was 50C for this print I think.

Any help would be wonderful :)

  • @[email protected]MEnglish
    11•4 months ago

    Pointy corners like to lift. Try designing with a small radius if possible. A brim helps a lot. Also print so that the long edge of the part is on the X axis for bed slingers.

    This is an example I am currently printing with a 10mm brim: image of a 3d print in progress

      • @[email protected]MEnglish
        4•4 months ago

        The shorter side on the X makes less air movement across the bed thus retaining more heat in a localized area. Think of all printer motions like little fans themselves. Moving a palm frond or paper fan moved in a large motion moves more air.

        The moving bed and undesired cooling it causes is one of the largest weak spots in Cartesian printers.

      • @[email protected]English
        3•4 months ago

        So on a bed slinger you can orient a print any way you want.

        But, a bed slinger has a lot more mass to move when moving the Y axis (the bed, your print attached to the bed) then it does on the X (the gantry and tool head)

        So orienting your print where longer moves are on the X axis has a couple benefits

        • accelerations on X are less likely to introduce ringing The
        • Heavier prints are less likely to come loose from the shifting (although if this is the case you probably should slow down or work on adhesion issues overall)

        You’ll see something similar with Voron prints where some orient the infill to be at 45 degrees since that overall works best with how CoreXY AB motors work. E.g. only one motor is pulling vs both working in tandem at other angles.

        https://github.com/AndrewEllis93/Ellis-SuperSlicer-Profiles?tab=readme-ov-file#45-degree-profile-vs-standard-profile

        • @[email protected]MEnglish
          3•4 months ago

          That depends on the type of print. The design the OP showed will not have such a ringing issue with something large and low. The problem is a lifting corner. The long Y orientation is wrong for this problem.

    • @[email protected]OPEnglish
      3•4 months ago

      I’ll try to work that into my next iteration, not sure if rounded corners will help with the plan in mind but that’s all part of the challenge and fun I suppose! Thanks for the response.