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    Transition from lozenge to circle along arc

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    • C Offline
      cthawkinson
      last edited by

      Good evening all,

      This is my first post here, even though I have used this forum often to answer questions that have come up as I have use Sketchup. I have run into an issue which I haven't been able to solve on my own, so hopefully someone here can help.

      I am trying to connect a hollow cylinder which is lozenge shaped to a hollow cone which is circular. This connecting piece will transition from the lozenge to the cone via an arc.

      Here is what I have done so far:

      1. I made a circle matching the diameter of my cone and hollowed it out.
      2. I made another circle matching the diameter of the lozenge and hollowed it out.
      3. I drew an arc connecting the inside and outside of my two circles.
      4. I used the Follow Me tool to draw the arced cylinder.

      That all worked great, as I had my cylinder. You can see this in the attached SU Make 2017 lozenge to circle along arc.png. I made the green cylinder as described above, which connects to the gray cone on the right and the purple/yellow lozenge on the left.

      Now I have my cylinder, wanted to transform the wider end into a lozenge using some tips I found at in this forum topic:

      https://sketchucation.com/forums/viewtopic.php?f=79&t=43234

      In spite of the good instructions in this topic, I am not getting the desired results. Instead of transition the cylinder along its entire length, it will only do so in the first segment, or I end up with lozenges at both ends instead of just one.

      Do any of you have any thoughts as to what I am missing? I have also uploaded a Sketchup Make 2017 file of the model (SU Make 2017 lozenge to circle along arc.skp) if anyone wants to take a look at that. If you do, please note that I separated each piece by 5mm eliminate z-fighting.

      Thanks in advance for taking a look at this.

      Chris


      Sketchup model image


      Sketchup Make 2017 model

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      • pilouP Offline
        pilou
        last edited by

        a brute method πŸ˜„ Thx Fredo6 and its versatile Curviloft 😎

        Kill surfaces and segments for keep only circular curves

        you can make the same with other if you want truncated conic volumes

        https://i.postimg.cc/rpYZyFLG/like-thatt.jpg

        Funny i have made a conic form few days ago for the free Simlab Composer Lite πŸ˜„ (max 1920 *1080)
        (geometric caterpilar curves + spheres )

        https://i.postimg.cc/gjZFpM2m/carterpilar.jpg

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

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        • C Offline
          cthawkinson
          last edited by

          @pilou said:

          a brute method πŸ˜„ Thx Fredo6 and its versatile Curviloft 😎

          Kill surfaces and segments for keep only circular curves

          you can make the same with other if you want truncated conic volumes

          https://i.postimg.cc/rpYZyFLG/like-thatt.jpg

          Funny i have made a conic form few days ago for the free Simlab Composer Lite πŸ˜„ (max 1920 *1080)
          (geometric caterpilar curves + spheres )

          https://i.postimg.cc/gjZFpM2m/carterpilar.jpg

          Thanks! I used the Skinning tool and that did exactly what I wanted; creating a surface along the arcs I created to get a smooth transition from the lozenge to the circle.

          Thanks so much for helping out. I am not back on track!

          1 Reply Last reply Reply Quote 0
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