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wfalco16-Pearl
16-Pearl
October 1, 2015
Solved

sweep elliptical sketch

  • October 1, 2015
  • 2 replies
  • 5421 views

What is the best method for sweeping an elliptical sketch - such as the shape of a spoon (no handle)?


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Best answer by TomD.inPDX

Just for fun...  This is using splines exclusively.

Since the shell halves were identical (and to test that they were!) I rotated the pattern rather than mirroring.

Mirror does not always update when the parent feature is changed.  The patterns do by default.

Things get pretty strange when you control each node of a spline.  But it can give you some very nice results.

Be sure to select the HD setting on the video.

2 replies

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TomD.inPDX17-Peridot
17-Peridot
October 2, 2015

I wouldn't try to get the shape of the spoon in one feature.

Typically, you would create a surface shape that extends beyond the edges and go back and trim that surface to the shape you want.

Then you add thickness or a second companion surface if you don't want uniform thickness.

Spoons are so much about style that you really want control over every aspect.

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wfalco16-PearlAuthor
16-Pearl
October 2, 2015

I do not do much surfacing. Are you referring to using surfacing module?

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TomD.inPDX17-Peridot
17-Peridot
October 2, 2015

No, just the standard surfaces in Creo.  For instance, you can revolve a surface in the same way you revolve a solid.  You can trim surfaces and merge surfaces with other surfaces or projected curves..  If you merge an enclosed volume of surfaces, you can solidify that.

It is worth knowing surfaces if you want some stylized geometry.  I do not need it often, but certainly comes in handy when I do.

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wfalco16-PearlAuthor
16-Pearl
October 2, 2015

Yeah - I am very weak with surfacing. I know how to offset, solidify etc. But not sure how to revolve and trim. I have attached a file. It's really more of a tanning goggle than an spoon shape. I have 3 curves. I read boundary blend tool was the way to go. But was in an old post and sample files were gone. the curves may or may not be represented properly - but they are basically the 3 I'd wish to get a by-product of a surface or solid. I am using WF4. Let me know what you think. Thanks. Wayne

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