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    An exercise: DRAWING A PARISIAN FENCE

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    • ely862meE Offline
      ely862me
      last edited by

      I meant it s not braiding.
      U must follow the indication from Taff : 5 by 6(diagonal)


      p fence.jpg


      cloturetissee003a.png

      Elisei (sketchupper)


      Before no life was done on Earth it was THE LIFE ITSELF...GOD
      Come and See EliseiDesign

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      • simon le bonS Offline
        simon le bon
        last edited by

        Taff, you are right!
        And Ely too (you are quicker than me ๐Ÿ˜† )
        The diamond need to be done with an odd number of semi waves.

        If I take the same wave and use 5 semi waves:

        http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/ParisianFence007_th.jpg


        http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/ParisianFence008_th.jpg

        that works perfectly.
        if I analyze better the fence -( I take a pen an a shit of paper ๐Ÿ˜‰ and draw the wave blindely, just looking to the picture, i discover you are right: 5x5 semi waves!)

        A good point
        going to next step..
        simon

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        • Rich O BrienR Offline
          Rich O Brien Moderator
          last edited by

          @unknownuser said:

          shit of paper

          ๐Ÿ˜ฒ

          Otherwise an excellent study to compliment Taff's Geodesic Challenge.

          Look forward to the 'Loop' mathematics ๐Ÿ˜‰

          Rich

          Download the free D'oh Book for SketchUp ๐Ÿ“–

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          • ely862meE Offline
            ely862me
            last edited by

            The beginning was ''almost'' easy..the next step..i dare to say, it ll be the last ๐Ÿ˜† ,but good luck anyway!

            Elisei (sketchupper)


            Before no life was done on Earth it was THE LIFE ITSELF...GOD
            Come and See EliseiDesign

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            • ely862meE Offline
              ely862me
              last edited by

              @unknownuser said:

              @unknownuser said:

              shit of paper

              ๐Ÿ˜ฒ

              ๐Ÿ˜† ๐Ÿ˜†

              Elisei (sketchupper)


              Before no life was done on Earth it was THE LIFE ITSELF...GOD
              Come and See EliseiDesign

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              • simon le bonS Offline
                simon le bon
                last edited by

                OOPs!!! ๐Ÿ˜ณ

                http://i274.photobucket.com/albums/jj245/Spendauballet/generalPicts/oh_shit.jpg

                OF

                http://i274.photobucket.com/albums/jj245/Spendauballet/generalPicts/sudoku-papier-en-action.jpg

                sheet!!! ๐Ÿ˜Ž

                ๐Ÿ˜Ž โ˜€ ๐Ÿ˜Ž ๐Ÿ˜Ž โ˜€ ๐Ÿ˜Ž ๐Ÿ˜†

                @unknownuser said:

                The beginning was ''almost'' easy..the next step..i dare to say, it ll be the last ,but good luck anyway!

                I can smell it is the point! Afraid to engage the step ๐Ÿ˜•

                s

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                • TaffGochT Offline
                  TaffGoch
                  last edited by

                  @simon le bon said:

                  The diamond need to be done with an odd number of semi waves.
                  If I take the same wave and use 5 semi waves:

                  http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/ParisianFence007_th.jpg

                  that works perfectly.

                  Recall that I, also, had a couple of "false starts." You have just re-solved my first false start. ๐Ÿ‘

                  My second mistake involved the horizontal "rail" strips that run at the top and bottom of the fence. That spacing also has to be precise, or they won't braid, either.

                  (And you can't cheat, by using a different sinusoidal spacing. The fence is supposed to be made of all the same sine-wave wire.) โ˜€

                  -Taff

                  "Information is not knowledge." -- Albert Einstein

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                  • TaffGochT Offline
                    TaffGoch
                    last edited by

                    @unknownuser said:

                    When you have flat model, curved can be made by the Fredo Scale, no? ๐Ÿ˜‰

                    That should work fine, for "bending" the top hoops, and the short segments just below the top rails.

                    (Pilou, when I first read your post, I wasn't quite sure what you were talking about. Looking back, your idea makes sense, even though I haven't tried it.) ๐Ÿ‘

                    -Taff

                    "Information is not knowledge." -- Albert Einstein

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                    • pilouP Offline
                      pilou
                      last edited by

                      And now the coup de grace ๐Ÿ˜‰

                      http://clotureslestrie.com/store/images/vinyl_chain_link_roll.jpg

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

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                      • TaffGochT Offline
                        TaffGoch
                        last edited by

                        The fence, so far, looks too "wimpy" for my tastes.

                        By increasing the amplitude of the sinusoidal paths, and increasing the diameter of the tubular cross-section circle, the fence is no longer made of heavy-gauge wire, but of sturdy wrought iron:
                        Wrought iron fencing
                        Achieved by editing only the component definitions. No new spacing or sine-wave construction required -- only sine-amplitude scaling, and new "follow me" extrusions, using a larger circle.

                        (There are similar wrought-iron fences in New Orleans.)


                        Model available in 3D Warehouse:
                        Parisian Fence - "Beefier" Version

                        Original model:
                        Parisian Fence โ€ข Exercise

                        -Taff

                        "Information is not knowledge." -- Albert Einstein

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                        • simon le bonS Offline
                          simon le bon
                          last edited by

                          @unknownuser said:

                          And now the coup de grace ๐Ÿ˜‰
                          ๐Ÿคฃ

                          Sorry Taff to be so slow ๐Ÿ˜•

                          (I still haven't opened you skp)

                          I have very carefully made a new sinusoid in order to match the 5 semi-waves of the diamond with the picture.

                          http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/ParisianFence009_th.jpg

                          I agree with you that the same sine-wave have to be used for the horizontal "rail" strips,

                          @unknownuser said:

                          (And you can't cheat, by using a different sinusoidal spacing. The fence is supposed to be made of all the same sine-wave wire.) โ˜€
                          my mind is the good positioning of them give a starting point for all the geometry.

                          I found (evidently) the same results as you

                          http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/ParisianFence010_th.jpg

                          Strangely, nothing actually leads me to your intuition of the shared spacing of 6 1/2waves !

                          I have next tried to see if:
                          The size of angles are significant in structure of the diamond ?

                          The answer is Yes and No ๐Ÿ˜†
                          The angle of the diamonds on the referential picture, taken by the upper side is about 37ยฐ

                          http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/ParisianFence011_th.jpg

                          If I diminish it to 20ยฐ the braiding is still efficient, depending only of the thickness of the string.
                          but the point is that then the above horizontal "rail" strip doesn't match anymore at all!!

                          http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/ParisianFence012_th.jpg

                          This try leads me to understand that the ideal and true angle for the diamond is 60ยฐ Then the above horizontal "rail" strip match perfectly ๐Ÿ˜Ž

                          http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/ParisianFence013_th.jpg

                          Now I am going to see with the curve.
                          My Idea is to bend the sinusoid as Pilou's way. I am going to try Chris Fullmer's Shape Bender to establish the curves..

                          to be continued..
                          ๐Ÿ˜‰ simon

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                          • TaffGochT Offline
                            TaffGoch
                            last edited by

                            @simon le bon said:

                            This try leads me to understand that the ideal and true angle for the diamond is 60ยฐ Then the above horizontal "rail" strip match perfectly ๐Ÿ˜Ž

                            Careful, there, Simon... ๐Ÿ˜•

                            ...that was my second mistaken false start! Before I discovered the semi-sinusoidal count, of 6 [NOT 6ยฝ for the horizontal spacing.]

                            -Taff

                            "Information is not knowledge." -- Albert Einstein

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                            • TaffGochT Offline
                              TaffGoch
                              last edited by

                              Simon,

                              You are not the only one to learn by making/correcting mistakes. (The best kind of learning.)

                              I just discovered a spacing mistake I made in the top-rail/hoop area! ๐Ÿ˜ฎ

                              If you're sharp-eyed, you should be able to see the difference between the model I posted here (as an earlier attachment,) and the model I've posted (fixed) at the 3D Warehouse: Parisian Fence โ€ข Exercise

                              http://sketchup.google.com/3dwarehouse/download?mid=1de34a55bdd876622137e32e8ebf2b1&rtyp=lt&ctyp=other&ts=1278298043000

                              -Taff

                              "Information is not knowledge." -- Albert Einstein

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                              • pilouP Offline
                                pilou
                                last edited by

                                About le "coup de grace", I believe that it will be very easy with Shape Bender by Chris Fullmer ๐Ÿ˜‰
                                grace.jpg

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

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                                • ely862meE Offline
                                  ely862me
                                  last edited by

                                  flat coup de grace


                                  regular fence.jpg

                                  Elisei (sketchupper)


                                  Before no life was done on Earth it was THE LIFE ITSELF...GOD
                                  Come and See EliseiDesign

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                                  • simon le bonS Offline
                                    simon le bon
                                    last edited by

                                    @Ely!! Hey Guy, I like your way ๐Ÿ‘ ๐Ÿ˜‰

                                    @Taff

                                    @taffgoch said:

                                    I just discovered a spacing mistake I made in the top-rail/hoop area! ๐Ÿ˜ฎ
                                    If you're sharp-eyed, you should be able to see the difference ..

                                    I don't see ๐Ÿ˜•

                                    (I'm very honored you have add this exercise to your Warehouse Collection...)

                                    Well I'm glued . May be I haven't the level to solve ๐Ÿ˜•


                                    http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/ParisianFence014_th.jpg


                                    http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/ParisianFence015_th.jpg


                                    http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/ParisianFence016_th.jpg

                                    ๐Ÿ’ญ sim

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                                    • TaffGochT Offline
                                      TaffGoch
                                      last edited by

                                      @simon le bon said:

                                      Well I'm glued . May be I haven't the level to solve

                                      Simon,

                                      You may be stuck (temporarily,) but I am confident, from the quality of the images you've posted, that you have the necessary skills/perception to reproduce the fence geometry.

                                      As a physicist, I have faith in "trial and error" experimentation, to solve a problem. You have been demonstrating that you, too, keep experimenting until you find a solution. You are to be commended for not giving up!

                                      Spacial perception...
                                      (You always have the 3D Warehouse model to which you can refer, if necessary.)

                                      -Taff

                                      "Information is not knowledge." -- Albert Einstein

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                                      • ely862meE Offline
                                        ely862me
                                        last edited by

                                        ๐Ÿ˜„ 2nd step done ๐Ÿ˜„ .. bending was done with Fredo's Radial bending.
                                        I did't paid too much attention to the maths(but i made it correctly) and it came out pretty nice.
                                        Just need to close the loop and it s done ๐Ÿ˜„ .


                                        2nd step done.jpg


                                        2nd step done a.jpg

                                        Elisei (sketchupper)


                                        Before no life was done on Earth it was THE LIFE ITSELF...GOD
                                        Come and See EliseiDesign

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                                        • TaffGochT Offline
                                          TaffGoch
                                          last edited by

                                          @ely862me said:

                                          2nd step done ๐Ÿ˜„ .. bending was done with Fredo's Radial bending.
                                          I did't paid too much attention to the maths (but i made it correctly) and it came out pretty nice.
                                          Just need to close the loop and it's done ๐Ÿ˜„ .

                                          Elisei,

                                          Looks great!

                                          I assume that the sinusoidal segments are still the same length? (It appears so, but I can't tell if they are precisely equal, without measuring.)

                                          -Taff

                                          "Information is not knowledge." -- Albert Einstein

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                                          • ely862meE Offline
                                            ely862me
                                            last edited by

                                            Honestly i didn t measure them after bending ๐Ÿ˜• ,and i tend to say they are not even.
                                            Anyway it s finished! Not as perfect as yours but visually almost perfect!


                                            3d step a.jpg


                                            3d step b.jpg


                                            3d step c.jpg

                                            Elisei (sketchupper)


                                            Before no life was done on Earth it was THE LIFE ITSELF...GOD
                                            Come and See EliseiDesign

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