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    Extrude tapered object

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    • A Offline
      AUKURAS
      last edited by

      Hello everyone!

      I would like to know if there is a straightforward approach for extruding along two tapered rails an object that is rather unusual in shape?

      I have two cross sections of the part, but those sections are taken not at the ends of the part. I can easily create a surface between those two faces using Curviloft, but is there an easy way to pull them further? I know how to do it manually, but it's hell of the work while curves are made of so many segments.

      Example

      Example

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      • Dave RD Offline
        Dave R
        last edited by

        Depending on what you want, you might try selecting and moving the end. Or you could extrude with Push/Pull and then scale the end. Might be that the native Scale tool or Fredo6's FredoScale would work, too. If I were going to do it I would just make it the full length from the beginning and not screw around with editing the shape after Curviloft.

        Etaoin Shrdlu

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        • A Offline
          AUKURAS
          last edited by

          Thank you for an advice! But I tried those options already, unsuccessfully.

          I need high precision, and this part that you see already - can’t be distorted. It has to be extended in perspective. I can’t scale and move because part is not going to end up right. If I’m thinking right - ends of the finished part are not just scaled down cross section (at least one of them)

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

            This is a scaling approach to complete.

            If you double click the center line with Tape tool it will generate a guideline which follows the normals.

            https://i.imgur.com/uHPNt2Y.png

            Now you can scale your profile accurately

            Download the free D'oh Book for SketchUp 📖

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            • Dave RD Offline
              Dave R
              last edited by

              @aukuras said:

              I need high precision...

              I think the best approach then is to model it at the correct length from the beginning and avoid introducing errors by modifying the incorrect shape.

              Etaoin Shrdlu

              %

              (THERE'S NO PLACE LIKE)

              G28 X0.0 Y0.0 Z0.0

              M30

              %

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