DS-precast Posted October 3, 2013 Share Posted October 3, 2013 Hello all I am developing a parametric model of a precast stair using Inventor 2013. I have set a parameter call "rake" to define the rake distance of the stair (the distance the nosing of each tread protrudes over the tread below - usually about 25 mm) This is initially set to 25 mm in the sketch. If there is no rake, I set this to 0 mm, and this gives a perfectly horizontal & vertical stair profile. If I then set this back to 25 mm, Inventor flips (reverses) the direction and the profile produced is incorrect (it is like a negative rake angle). I guess it is because when I set the rake to 0, the two points are directly in line vertically, and when I set it to 25 mm again it pushes them 25 mm apart horizontally, but in the wrong direction. Is there any way to constrain these parameters or points such the distance is measured only in the desired direction, or to stop one point from going beyond the vertical position of another point. Any help on this matter would be very much appreciated. Many thanks in advance. Quote Link to comment Share on other sites More sharing options...
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