BobWeaver Posted February 9, 2010 Share Posted February 9, 2010 Hi, I'm trying to extrude a thin rectangle along a helical path. It appears that as the extrusion hits the 0 and 180 degree points on the helix, the rectangle twists around (see image below). This is with the "lock profile plane" option checked. If I leave it unchecked, then the profile rotates continuously through the extrusion. The helical path was created using the helix creation tool. Any idea how to fix this problem? Quote Link to comment
Horst M. Posted February 9, 2010 Share Posted February 9, 2010 Thats a cool object. even tough you didn't want it :-) I tried with VW2010 an 2009 and can't reproduce that effect. :-( See the Image attached. I drew a line, made a Helix of it with 10 Turns, and did an Extrude Alongpath with a small rectangle and Plane locked. Do you like to post your File? horst m Quote Link to comment
BobWeaver Posted February 10, 2010 Author Share Posted February 10, 2010 (edited) Thanks for replying. The only difference between what we did is that when I created the helix, I used a starting angle of 90 degrees. I have now found that I don't get the twist at 0 and 180 degrees if the helix starting angle is 0 degrees. However, that creates another problem. When the starting angle of the helix is 0 degrees, I can't get the surface of the extrusion to be parallel to the axis of the helix. I think you will find in your own example that if you rotate it into a different view, you will see that the surface has a slight angle to it, as can be seen in the following image: I've attached my original files, saved before the extrusion and again after the extrusion. Edited February 10, 2010 by BobWeaver Quote Link to comment
BobWeaver Posted February 10, 2010 Author Share Posted February 10, 2010 Nevermind. I did a bit more digging and realized that I should have been doing a sweep rather than an extrude along path. It now looks the way I want it. Even so, the glitch when doing the extrude along path appears to be a bug in Vectorworks. Quote Link to comment
mike m oz Posted February 10, 2010 Share Posted February 10, 2010 Bob, when you discover an obscure bug like this its important to bug report it so it will get fixed. Good catch by the way. Quote Link to comment
BobWeaver Posted February 10, 2010 Author Share Posted February 10, 2010 I just made a bug report on this. Quote Link to comment
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