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Follow-me twist problem

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  • B Offline
    Box
    last edited by 26 Oct 2020, 02:45

    Don't forget you can always 'remove the finger' from the ring.


    Subtract.gif

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    • N Offline
      nlipovac
      last edited by 26 Oct 2020, 05:48

      I am sorry, just did not quite understand you there so here is my try on this.

      At first, I only can get to offset that curve if the upper surface is planar.
      So I first did JointPushPull on that upper surface to get a straight hight surface and then used
      that surface to get a straight upper surface.
      Then I used that surface and JointPushPull-Follow Push Pull to get high surfaces that are offsetting from the upper one.
      Here is a file also because my explanation sounds weird, just a bit πŸ˜„

      I reupload the file, now it is the SU20016 version.


      My take on this

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      • P Offline
        pilou
        last edited by 26 Oct 2020, 09:32

        If you have not the pro version for Boolean operations you have Bool Tools 2
        (powerful than native tools)

        Frenchy Pilou
        Is beautiful that please without concept!
        My Little site :)

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        • N Offline
          ntxdave
          last edited by 26 Oct 2020, 13:48

          More Good videos Box and Pilou. Thanks for sharing.

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          • T Offline
            thegoodguy
            last edited by 26 Oct 2020, 15:31

            @pilou said:

            Can't reload your last skp ! (save as 2016 as previous) πŸ˜‰

            Hi pilou,

            The last skp I uploaded (follow-me-problem-2.skp) was in 2016 format πŸ˜•

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            • T Offline
              thegoodguy
              last edited by 26 Oct 2020, 16:02

              Wow!

              I kind of owe you all a little apology. The rectangular profile was super-simplified to illustrate the problem. I realise now that the impacts any solutions you guys may post. The actual profile I want to use is this:
              profile.JPG

              Box; As I mentioned in my initial post, I tried Upright Extruder. It produces results much like the vertex option. It's good, but not perfect. The edge-extrusion/joint-push-pull produces similar results too, and also, I don't think that option would work with the profile I need. True-Bend is a great suggestion. After "flattening" the ring rail/path using the Unfold tool, producing a flattened complete ring using follow-me and the profile, and then using True-Bend, I'm getting exactly what I need.
              flat-ring.JPG

              The only issue I'm having now is the final solid isn't the "solid" that's needed for 3D-printing. There are many errors that Solid-Inspector finds. I know this is due to the high resultion I need to get a good final result when the ring is actually cast. I'm experimenting with scaling up before True-Bending. Hopefully that will solve the solid issue.

              Thank you all for your input, suggestions and solutions. They've been v helpful and have reduced my headache πŸ˜„

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              • P Offline
                pilou
                last edited by 26 Oct 2020, 16:57

                And why not use Curviloft for propagate some profils on rails?

                Frenchy Pilou
                Is beautiful that please without concept!
                My Little site :)

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                • T Offline
                  thegoodguy
                  last edited by 27 Oct 2020, 00:45

                  And the winner is ... Curviloft

                  Excellent solution pilou. Thank you v much. The perfect shape and a perfect solid with no complex intersections to fix.

                  winner.JPG

                  Should fit snuggly against this lovely little Edwardian engagement ring.

                  ring.jpg

                  Thanks again, everyone.

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                  • B Offline
                    Box
                    last edited by 27 Oct 2020, 08:46

                    If you are doing a lot of jewelry it would be well worth your time to look into using vertex tools and true bend. It makes it easy to create rings from non symmetric geometry. And you can be as detailed as you need as long as you model cleanly. This required no cleanup after the bend except the removal of the double inner faces at the join. I only used 96 segments but you can easily go to the 200 you were using if need be.

                    https://i.imgur.com/dNgiCt6.gif

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                    • T Offline
                      thegoodguy
                      last edited by 27 Oct 2020, 15:11

                      Hi again,

                      Upon closer inspection, although the solidness is good and the profile alignment is good along all of the "straight" section of the rail, using Curviloft, the profile does twist on the shaped part of the rail. Back to TrueBend and solid-fixing. Scaling up x1000 reduced the errors to only 3 ... phew.

                      Just thought you might like to know.

                      x-section-curviloft.JPG

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                      • P Offline
                        pilou
                        last edited by 27 Oct 2020, 17:37

                        Maybe we can try something...
                        Post the file of Profils and Rails in dxf format and let see that Moi3D (nurbs) will made as result in SKP format export...

                        ...not sure...of the result πŸ˜„ (it's not your file just a test)

                        Here the structure of export SKP

                        humhum.jpg

                        Reloaded in SU
                        more_poly1jpg.jpg

                        I must ask more polygons in export! πŸ€“ (rendered as SKP file)

                        morepoly.jpg

                        This time edges are perfect! (for an SKP file) πŸ˜„

                        more poly2.jpg

                        Frenchy Pilou
                        Is beautiful that please without concept!
                        My Little site :)

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                        • T Offline
                          thegoodguy
                          last edited by 27 Oct 2020, 19:47

                          Hi pilou,

                          Rail and profile DXF file uploaded.

                          Thanks


                          rail+profile.zip

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                          • P Offline
                            pilou
                            last edited by 27 Oct 2020, 20:12

                            Next version of Moi (V4) will be more adapted for erase problems of the DXF!

                            Another thing : i must reduce the number of Control Points of the curves!
                            Or even redraw over it...
                            (Whithout change the form of course! )

                            GIF_numerous points.gif

                            GIF_numerouspts2.gif

                            sharp_angle.jpg

                            Frenchy Pilou
                            Is beautiful that please without concept!
                            My Little site :)

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                            • P Offline
                              pilou
                              last edited by 27 Oct 2020, 20:35

                              OK: reloadable! πŸ˜„

                              Just a question : does the section is on the good place or must be placed like that ?
                              Or by it's gravity's center ?

                              GIF_as_that.gif

                              Frenchy Pilou
                              Is beautiful that please without concept!
                              My Little site :)

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                              • T Offline
                                thegoodguy
                                last edited by 27 Oct 2020, 20:53

                                Looks good pilou.

                                I finally got it done using TrueBend.

                                Thanks.

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                                • P Offline
                                  pilou
                                  last edited by 27 Oct 2020, 20:58

                                  With section on the middle side ... path with 20 points against 200 points! πŸ˜‰

                                  https://images2.imgbox.com/6d/47/hMrcKzRK_o.gif

                                  Frenchy Pilou
                                  Is beautiful that please without concept!
                                  My Little site :)

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                                  • P Offline
                                    pilou
                                    last edited by 27 Oct 2020, 22:26

                                    Just for be sure : your dxf was made directly from SketchUP or from another program ?

                                    Frenchy Pilou
                                    Is beautiful that please without concept!
                                    My Little site :)

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                                    • P Offline
                                      pilou
                                      last edited by 27 Oct 2020, 22:30

                                      Many regulates can be done... πŸ˜‰
                                      This structure will be the SKP structure! πŸ€“

                                      https://images2.imgbox.com/da/64/BAQAY5NM_o.gif

                                      Here one...(skp file rendered)

                                      https://images2.imgbox.com/2d/cf/OGGhxqR7_o.jpg

                                      ps SKP linked


                                      pinky_ring.zip

                                      Frenchy Pilou
                                      Is beautiful that please without concept!
                                      My Little site :)

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                                      • T Offline
                                        thegoodguy
                                        last edited by 29 Oct 2020, 09:51

                                        @pilou said:

                                        Just for be sure : your dxf was made directly from SketchUP or from another program ?

                                        Hi pilou,

                                        Yes, it was exported from SU.

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                                        • P Offline
                                          pilou
                                          last edited by 29 Oct 2020, 11:47

                                          Thx for the info!

                                          Dxf from SketchUp are specific because curves are polylines so numerous "control points" !
                                          Maybe Circles and Arcs can be exported as real curves...

                                          With this one by Joergberg πŸ€“ (for SU Make)
                                          So circles and arcs are not "segmented" ! 😎
                                          dxf.jpg

                                          As we can see for the circle...that is a true curve!
                                          dxf1.jpg

                                          Frenchy Pilou
                                          Is beautiful that please without concept!
                                          My Little site :)

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