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Thread: Blend to Non-parallel work planes

  1. #1
    Aussie Revit Moderator Mr Spot's Avatar
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    Default Blend to Non-parallel work planes

    This is bugging me. I'm sure there used to be a workaround where you could get a blend to work between two non-parallel workplanes. But nothing I try seems to work, maybe it used to be a fortunate bug that has now been fixed?

    The top of the blend is at a different angle to the bottom.

    I know I can use a void to do this, but unfortunately in my situtation that isn't sufficient.

    Anyone still able to do this?
    Chris Price
    Co-Founder/BIM Manager/Product Designer
    Xrev Pty Ltd

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    All AUGI, all the time JoelLondenberg's Avatar
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    Default Re: Blend to Non-parallel work planes

    Maybe a "Solid Swept Blend"???
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    Aussie Revit Moderator Mr Spot's Avatar
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    Default Re: Blend to Non-parallel work planes

    Unfortunately the swept blend tool is not appropriate and couldn't create the desired shape. Given this project is so high profile I'm now attempt to see if AutoDesk is interested in getting involved. This project is likely to be on the front of many a magazine when its completed in Febraury...
    Chris Price
    Co-Founder/BIM Manager/Product Designer
    Xrev Pty Ltd

    Revit Rants BLOG

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    All AUGI, all the time AP23's Avatar
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    Default Re: Blend to Non-parallel work planes

    U can create two reference lines in an elevation view and attach the bottom and top sketch to these lines. You can rotate the lines which will change the top and bottom angle. This doesn't always work, but other than that, it's not possible.

    The good news is that al other software can do what you want. And the most magazine projects are done with these programs. So, until Revit comes with lofts, grasshopper iterations, cage modifiers etc. we'll have to rely fully on the other applications.
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    AUGI Addict Andre Baros's Avatar
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    Default Re: Blend to Non-parallel work planes

    Andrew stated the correct work around. Draw your sketches on parallel planes and rotate one of them afterward.

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    Aussie Revit Moderator Mr Spot's Avatar
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    Default Re: Blend to Non-parallel work planes

    Hmm, I was trying that and it wasn't working...

    I'll definitely upload some pics of this project as we develop it in revit because it definitely goes a long way to proving them Revit can model and document extremely complex forms

    This is an elliptical shaped tower about 60 metres tall that tapers on a parabolic curve up to the top. The facade is made of irregular hexagons (nearly 1000 massive precast concrete hexagonal rings...), every single one of them is different and the inside and external face are at different angles. Every face of internal hexagonal ring is on a different plane. I've devised a family that allows all of this and more. It also completely automates the shop drawings of every single face that makes up the family. Was just wanting to make it a bit cleaner...

    Some of the formulas are simply massive... Construction is supposed to be completed by February and we got given the project last week... Needs to be fully documented by the end of December so its no easy feat. We are expecting over 1000 sheets for the documentation.
    Chris Price
    Co-Founder/BIM Manager/Product Designer
    Xrev Pty Ltd

    Revit Rants BLOG

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    Aussie Revit Moderator Mr Spot's Avatar
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    Default Re: Blend to Non-parallel work planes

    Project so far...

    Getting there. We still need to amend the base so it matches/merges neatly with the tower... About 1000 more hexagons to go...
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    Chris Price
    Co-Founder/BIM Manager/Product Designer
    Xrev Pty Ltd

    Revit Rants BLOG

  8. #8
    All AUGI, all the time AP23's Avatar
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    Default Re: Blend to Non-parallel work planes

    Are you stacking the hexagons on top of eachother, one by one?

    If you are in the conceptual phase and looking for various design options, i would suggest you use Grasshoper plugin for Rhino. You can knock out those 1000 hexagons in 10 minutes during lunch.

    http://grasshopper.rhino3d.com/

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    Aussie Revit Moderator Mr Spot's Avatar
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    Default Re: Blend to Non-parallel work planes

    No this is construction phase. It has already been designed in rhino. We are now documenting it in Revit complete with shop drawings that elevate every single face of the hexagonal, pentagonal, quadrilateral units. To give an idea about the scale, that footprint is around the size of a football oval.

    Unfortunately there is no algorithim either as the design is supposed to be organic and natural. That is, no 2 pieces are alike. I'd be amazed if the hexagons could actually be automated in a way that still allowed you to have a natural differentiation...
    Chris Price
    Co-Founder/BIM Manager/Product Designer
    Xrev Pty Ltd

    Revit Rants BLOG

  10. #10
    All AUGI, all the time AP23's Avatar
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    Default Re: Blend to Non-parallel work planes

    Very interesting. We need more of these projects done in Revit. There is't much presedents in this area of the business, so I hope you can post some more images of the whole process (SD to fabrications).

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