Hello!

Is there a way in FreeCAD to round off the corners of shapes specifically like this? Without rounding the edges themselves (i.e., the rounded corner tapering off to “zero” at the edges).

Thank you

  • in_my_honest_opinion@piefed.socialEnglish
    5·
    2 days ago

    Slice the corner, then round the edges of the slice maybe? Or imbed a sphere into that corner where the radius is the desired corner “zero”.

        • vatlark@lemmy.world
          3·
          2 days ago

          Upon further thought… I’m not sure. Mental geometry is hard.

          I was thinking that the radius of curvature would be constant as you rotated around the vertex. It may work:

          So you could make a sphere inside your part, but don’t merge it with your part, the sphere is just a tool. The radius of the sphere would be the desired radius of your fillet. The sphere would be made tangent to each of the edges that approach the vertex(the corner).

          Then you remove everything outside of the sphere. To do that you could sketch a triangle where the points of the triangle land on the three edges. But the plane the triangle sits on needs to be on the vertex of your part and it is parallel to the plane that intersects the three points where the sphere meets the edges. Then extrude your triangle up to the surface of the sphere. But it needs to be a subtractive extrude, so it deletes material from your part.

          Maybe I’ll try. Its a fun excuse to use freecad more.

        • SaveTheTuaHawkEnglish
          3·
          2 days ago

          make a triangle in the corner, merge it with a sphere using a boolean cut.