bmckelvie Posted July 9, 2017 Share Posted July 9, 2017 I have been racking my head trying to figure out how to do this in IronCad I am trying to model a spiral that starts flat and ends up vertical 270 degrees away. Think of a thread or auger flute but without the shaft in the middle and that only makes one 270 Degree rotation. I am using it as a gate to control flow, on the flat full flow will be allowed through then if I rotate 270 degrees, no flow will occur. Quote Link to comment Share on other sites More sharing options...
bmckelvie Posted July 10, 2017 Author Share Posted July 10, 2017 I found a way but I am not overly happy with the results and found a lot of bugs an limitations in the process. Using loft I created 2 rectangles 270 degrees apart from each other, and the second one higher than the first. Then I created spiral 3d sketches that went from corner to corner of the rectangles. See Gate_3.png Then in the loft command I used the important point feature to correct IronCads bizarre default choices for where to loft too. Ironcad unfortunately leaves weird artifacts around the loft, I sort of got around them by making my loft a larger diameter than it needed to be and then using a hollow pipe to trim the outsides neat. I also had to work around the fact that Ironcad can not loft to the second rectangle if its bottom corner is the same point and the first rectangles top corner. I got around this by leaving a space, then duplicating the loft lower to fill in the open area left by the workaround. There are still a few artifacts I need to get rid of, but it is getting close to what I wanted I attached a few pictures to try to make more sense of this. Quote Link to comment Share on other sites More sharing options...
Robert Andersson Posted July 12, 2017 Share Posted July 12, 2017 I am not sure exactly what you need but I think you should involve sweep. Loft is a bit to free form. Maybe this shape can help: 270_grej.ics Quote Link to comment Share on other sites More sharing options...
bmckelvie Posted July 19, 2017 Author Share Posted July 19, 2017 (edited) I am not sure exactly what you need but I think you should involve sweep. Loft is a bit to free form. Maybe this shape can help: 45599[/snapback] Thanks, that is a lot closer to what I was looking for. Edited July 19, 2017 by bmckelvie Quote Link to comment Share on other sites More sharing options...
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