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    Barley Twist Spirals

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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

            %

            (THERE'S NO PLACE LIKE)

            G28 X0.0 Y0.0 Z0.0

            M30

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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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                    G28 X0.0 Y0.0 Z0.0

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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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                                      (THERE'S NO PLACE LIKE)

                                      G28 X0.0 Y0.0 Z0.0

                                      M30

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                                      • daleD Offline
                                        dale
                                        last edited by

                                        Thanks Dave, really interesting machine. I often wish I was a machinist, boy there would be trouble then.

                                        Just monkeying around....like Monsanto

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                                        • A Offline
                                          archturn
                                          last edited by

                                          @dale said:

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

                                          Here are two videos of turning a barley twist and then a rope twist on my machine.

                                          http://www.youtube.com/watch?v=LcjVLg0ql7c
                                          Barley Twist

                                          http://www.youtube.com/watch?v=0zVD22NqgSc>
                                          Rope Twist

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                                          • daleD Offline
                                            dale
                                            last edited by

                                            That's Great. So can you directly import from SketchUp to you machine?
                                            ( Oh and, I guess I'm still living in the past, as I was thinking of how difficult if not impossible to turn it by hand. 😳 )

                                            Just monkeying around....like Monsanto

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