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    Barley Twist Spirals

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    • GaieusG Offline
      Gaieus
      last edited by

      @dave r said:

      Pilou, you trot that video out every time someone asks how to draw anything. πŸ˜’ πŸ˜†

      That's not a barley twist either.

      True but otherwise a brilliant solution!

      (I could imagine Kito Raupp is Pilou himself in a humble disguise)
      πŸ˜†

      Gai...

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      • gillesG Offline
        gilles
        last edited by

        Here is a step by step.


        profile


        follow me around the circle


        erase unwanted


        intersect


        erase unwanted


        select the two profiles (center must be on blue axis at origin) run screw plugin


        cut  unwanted whit zorro plugin


        intersect


        erase unwanted

        " c'est curieux chez les marins ce besoin de faire des phrases "

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        • A Offline
          archturn
          last edited by

          @gilles said:

          Made in one shot with screw1_5.rb.

          AND it works also with components.

          This is what we call a rope twist not a barley twist. The barley twist has another (interior) radius. The rope twist looks like rope - though your method may work for a barley twist as well. David R's is definitely a barley

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          • Dave RD Offline
            Dave R
            last edited by

            @gilles said:

            Here is a step by step.

            Nice rope twist. πŸ˜‰

            Etaoin Shrdlu

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            • A Offline
              archturn
              last edited by

              Dave R
              Love your solution but I need to fit it to the other part of my newel. Gilles method looks like it will work. In CAD I'll usually do a sweep of the newel profile then draw my barley twist profile - sweep the barley profile with the correct pitch then subtract it from my newel sweep. I wish I could do it this way (specifically the subtract function) in SU since this yields the most realistic geometry - though again Gilles looks pretty right (just needs more interior radius to be classified as a true barley twist). Thanks

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              • gillesG Offline
                gilles
                last edited by

                Its up to you to create the good profile. πŸ’š

                You can also do this with screw:


                conic.png

                " c'est curieux chez les marins ce besoin de faire des phrases "

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                • Dave RD Offline
                  Dave R
                  last edited by

                  archturn, you could use the method I showed and create the transitions when you've finished. There isn't any reason you couldn't fit it to the rest of the turning. I did on the table legs. The transitions are similar to creating the pommels which I've showed in several other blog posts so I didn't bother with them in that one. The Screw plugin is nice, too. although you can do multiple starts the way Gilles shows, I would still make a single turn as a component and copy it as I did in the blog to keep file size down and make it easier to adjust the length.

                  Etaoin Shrdlu

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                  • gillesG Offline
                    gilles
                    last edited by

                    @dave r said:

                    archturn, you could use the method I showed and create the transitions when you've finished. There isn't any reason you couldn't fit it to the rest of the turning. I did on the table legs. The transitions are similar to creating the pommels which I've showed in several other blog posts so I didn't bother with them in that one. The Screw plugin is nice, too. although you can do multiple starts the way Gilles shows, I would still make a single turn as a component and copy it as I did in the blog to keep file size down and make it easier to adjust the length.

                    Totally agree with this. πŸ‘

                    " c'est curieux chez les marins ce besoin de faire des phrases "

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                    • charly2008C Offline
                      charly2008
                      last edited by

                      Hi,
                      here are two more options


                      1.jpg


                      3.jpg


                      2.jpg

                      He who makes no mistakes, makes nothing

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                      • A Offline
                        archturn
                        last edited by

                        I can see that I should have been visiting the forum more frequently instead of pulling my hair out. Awesome!!!

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                        • Dave RD Offline
                          Dave R
                          last edited by

                          Yes. You should have. πŸ˜‰ And as I wrote before, there's more than one way to arrive at the final result in SketchUp. This is a great example.

                          Etaoin Shrdlu

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                          • A Offline
                            archturn
                            last edited by

                            @charly2008 said:

                            Hi,
                            here are two more options

                            Charly
                            I'm wondering how to use the "follow me keep" plugin". I installed it and though it shows up in my plugin menu nothing seems to happen when I click it.

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                            • massimoM Offline
                              massimo Moderator
                              last edited by

                              You have first to select both the path and the face and then run the plugin.

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                              • gillesG Offline
                                gilles
                                last edited by

                                Just a question: why use two plugins instead of one which does very well the job?

                                " c'est curieux chez les marins ce besoin de faire des phrases "

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                                • A Offline
                                  archturn
                                  last edited by

                                  @gilles said:

                                  Just a question: why use two plugins instead of one which does very well the job?

                                  I'm going to try them all. I remeber some time back trying the "draw helix" without the "follow me keep" tool. That was one of the times I gave up. The result from using the native "follow me" is pretty ugly so I thought I would see what this tool was all about.
                                  Again, I wasted a lot of time by not coming here first.

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                                  • A Offline
                                    archturn
                                    last edited by

                                    @gilles said:

                                    screw1_5.rb.

                                    select 3 profiles (in the following case), set start point, set end point, enter n steps n turn and go.

                                    Could you elaborate on using screw1_5??

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                                    • gillesG Offline
                                      gilles
                                      last edited by

                                      Will do later, its late here in France and I should sleep.

                                      " c'est curieux chez les marins ce besoin de faire des phrases "

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                                      • jeff hammondJ Offline
                                        jeff hammond
                                        last edited by

                                        use a whole bunch of profile curves then apply wonky style?

                                        lines.jpg

                                        dotdotdot

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                                        • daleD Offline
                                          dale
                                          last edited by

                                          Just a quick question. In reality, can you turn a Barley Twist, or is it more of a carving exercise?

                                          Just monkeying around....like Monsanto

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                                          • Dave RD Offline
                                            Dave R
                                            last edited by

                                            Dale, barley twists can be turned, sort of. There's a machine that combines a router with a lathe and gears them together for creating barley twists and other ornamental milling. Check out this link. I used to have one of their machines and used it a lot. Of course now with CNC-driven equipment, it gets even more sophisticated. I can't say I would recommend dealing with the company but the idea was interesting.

                                            Etaoin Shrdlu

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