Hi All, Been lurking for a while here but finally feel like I have enough confidence to post here.
I am trying to model a twisted extrusion (flat bar) for design & later documenting it's fabrication
I began with a blend, and rotated the profile (pick lines from first profile) and adjusted the verticies so that it was handled as a twist, rather than a blend.
The start orientation (profile) and finish orientation profile) are the same, but rotated around 90deg from each other around a single (still following?)
unfortunately Revit handles this strangley and seems to tread the face of the shape as if it were a single loop of elastic, supported by a structure/shape top & bottom, but unsupported in the middle: as a consiquence, when you run a horizontal section midway between the top & bottom profile the resulting Cut Profile is narrower.
For the sake of the explination the material would be aluminium, so in a real life example the tension createde by the twist would be negated by the compressive strength of the flat extrusion.
Please see Image attached: can anyone suggest how I can succeed in modelling this accurately?
ultimately I wish to run several horiz sections through one piece to show typical fixing details.
p.s. Revit 2013 - up to date...
Thanks!
|
Search
