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    Sine Wave Around a Cylinder?

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    • Dave RD Offline
      Dave R
      last edited by

      I'm drawing a blank. I think I ought to know how to work out the geometry for this but I've forgotten. I want to draw a sine wave around a cylinder. I'm specifically after 5 cycles in two revolutions. Any ideas?

      Etaoin Shrdlu

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      • R Offline
        remus
        last edited by

        draw your sin wave, use fredoscale->radialbend with 12 segments to bend it to a half circle, copy and scale to make a full circle, align to an existing cylinder and scale to fit.

        Youd have to mess around with the number of cycles a bit to get what your after, but it should work.

        http://remusrendering.wordpress.com/

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        • B Offline
          BTM
          last edited by

          ...or use shapebender.
          sine.skp

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          • Dave RD Offline
            Dave R
            last edited by

            Thanks Remus. I forgot about Fredo's Radial Bend. Off come my shoes and socks to figure out the math. ๐Ÿ˜‰

            Etaoin Shrdlu

            %

            (THERE'S NO PLACE LIKE)

            G28 X0.0 Y0.0 Z0.0

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            • Dave RD Offline
              Dave R
              last edited by

              Thanks BTM. That'll work, too.

              Etaoin Shrdlu

              %

              (THERE'S NO PLACE LIKE)

              G28 X0.0 Y0.0 Z0.0

              M30

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              • B Offline
                BTM
                last edited by

                ... it's not a real sine function, just showing the groups in groups of what to do. take 1.25 cycles, use shape bender with the line just as long as them, on a half circle, then use this 1.25 cycles 4 times to get 5 cycles, in 2 turns.

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                • Dave RD Offline
                  Dave R
                  last edited by

                  Thanks guys. I did this with Fredo's Radial Bend and Follow Me.

                  http://farm3.static.flickr.com/2428/3856098047_f5b8d0450d.jpg

                  Etaoin Shrdlu

                  %

                  (THERE'S NO PLACE LIKE)

                  G28 X0.0 Y0.0 Z0.0

                  M30

                  %

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                  • P Offline
                    phmeier
                    last edited by

                    hey dude, , very nice !!

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