tlehnhaeuser Posted June 8, 2006 Share Posted June 8, 2006 (edited) Believe or "escher knot" I have to model this for a project. Can anyone provide a way to do this in IC fairly easy? or know the formula that maybe the Formula Curve could use? I tried 3D curves but it won;t allow me to "cross" cuves and when I need a smmoth curve. Any help is appreciated. Tom click for animation Edited June 8, 2006 by tlehnhaeuser Quote Link to comment Share on other sites More sharing options...
tlehnhaeuser Posted June 8, 2006 Author Share Posted June 8, 2006 (edited) Heres my version, but its not really as smooth as would like it. Trying to get as "fat" a cross-section even if it intersects with itself. Tom Escher_Knot.ics Edited June 8, 2006 by tlehnhaeuser Quote Link to comment Share on other sites More sharing options...
Marcus Bertilsson Posted June 8, 2006 Share Posted June 8, 2006 I dont know if this may help but maybe you can split it up in several units? / Marcus Quote Link to comment Share on other sites More sharing options...
Mike Allen Posted June 8, 2006 Share Posted June 8, 2006 See if this is what you want. I made a frame with 2D curves (much easier to manipulate than 3D curves), then traced around it with a 3D spline. Then I created a 2D circle on the spline (it seems to come in with the extrude direction tangent to the spline), right-clicked on the circle & selected Create->Sweep. I used the 3D curve as the path & voila! -Mike escher_knot.ics Quote Link to comment Share on other sites More sharing options...
tlehnhaeuser Posted June 9, 2006 Author Share Posted June 9, 2006 Mike, Wow, thats a great approach, one I'm not sure I would have thought of. Thanks IronDudes, make Mike a TriBall Quote Link to comment Share on other sites More sharing options...
tlehnhaeuser Posted June 14, 2006 Author Share Posted June 14, 2006 Mike, Why does your knot appear to have "triangluated" surfaces whereas mne does not? I checked all the part options and both parts have the same settings. What am I missing? thanks Tom Quote Link to comment Share on other sites More sharing options...
Mike Allen Posted June 15, 2006 Share Posted June 15, 2006 I modeled one just before that with a slightly smaller cross section that didn't have the facets. When I increased the cross section diameter, the facets showed up. I just checked some of the IntelliShapes & the torus has facets, but the part torus doesn't - until you change the spin value to 360º. The only hypothesis I can come up with is when I increased the diameter of the cross section, the "insides" of the turns get close to kinking, so IronCAD switches to a less-smooth surface to compensate. Quote Link to comment Share on other sites More sharing options...
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