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Thread: 3ds Body Object with ffd to Revit

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    3ds Body Object with ffd to Revit

    Hello,

    I've done some massing in revit (2014), exported to max(2014) in .sat file and applied a ffd modifier on it. As said in some weird revit video by autodesk, it is pretty possible stuff, though for me when i import back into revit as .sat file it wont import.


    any tips? i tried simpler ffd's deforms and still revit mess up and says it could not be imported and i should seek autocad polymesh object bla bla bla.

    tried searching for solutions before, but no luck.
    thanks in advance.

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    French Moderator jbenoit44's Avatar
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    Hi, try to import your SAT into a Mass family before then put this in a project. Should work this way, but it depends on the shape maybe. Do you have a snapshot?

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    I thought it could be a shape problem, so i tried different shapes and had no results. ( shapes without ffd export perfectly to revit ). Just wondering if it is really possible using ffd.

    Even in the family editor, comes up the following error: "Some ACIS objects could not be imported. To import them, use AutoCAD to convert them into polymesh objects and reimport."

    Also, in autocad it imports fine.

    here is the snapshot:
    3ds Body Object with ffd to Revit-ex1.jpg

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    French Moderator jbenoit44's Avatar
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    Seeing the image, coulnd´t this be done only in Revit? In Mass environment, it´s pretty easy. Why are you using ffd modifier for this?

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    I've a strong relationship with Max, relatively new to Revit. find easier to apply some post-deformations in my masses in max instead revit;

    how would i transform the model in the following image to the one above it in revit? ( both were made in revit. the one above has the ffd which was nescessary regarding some project factors.)


    3ds Body Object with ffd to Revit-ex1.jpg
    if i switched the topo and base, in revit the side lines would not extrude along correctly like the ffd has.

    thanks

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    French Moderator jbenoit44's Avatar
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    3ds Body Object with ffd to Revit-twist-2.png3ds Body Object with ffd to Revit-twist.png

    Could be done in a mass family. you just have to sketch the above profile with 4 segments. and add a profile to a face if needed to twist faces a bit more.

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    I've been playing around and decided to go after your sugestion. Importing stuff in revit still cuts almost all the flexibility you have instead modelling in Mass family, hopefully in next revit versions we will be able to import a mass and allow it to behave like a regular revit mass...( even those .sat files arent that flexible )

    One thing that i can't understand is that even applying suggested modifiers(tapper, bend,... ) in imported .sat files, when i bring back to revit, like its shown in revit video tutorials by autodesk, wont work properly ( it behaves like a mesh, not a solid ). i hardly doubt its because my 3ds / revit versions...

    anyway, thank you very much .

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    Member JeffreyMcGrew's Avatar
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    Quote Originally Posted by lcolnaghi View Post
    i hardly doubt its because my 3ds / revit versions...
    Did you also try using DWG with solids as the export option from Max?

    I've brought SAT's from other softwares into Revit without issues, but not from Max specifically. From the error you're getting it sounds like something is up with the file Max is creating to me. Are you collapsing the Modifier Stack prior to export? I've had issues in the past with Max not properly exporting the 'modified' thing properly sometimes, and getting the 'base' mesh/object.

    But I've taken solids made elseware (like Inventor / Fusion) into Revit, and even exploded them into 'native' Revit solids in some cases. So in theory the workflow should work, I think you just need to dig into your Max SAT export options!

    Sorry I don't know much about Max, I only use it for rendering.

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    Jeffrey, i did a few tries in dwg format also, straight from max to cad then revit. No luck!
    Through the day i've found a solution for it though: there was an edge which revit was exporting in .sat file split in half (as shown in snapshot - it's the basic solid swept blend before using ffd in max ); which was becoming trouble when exported back to revit from max.

    3ds Body Object with ffd to Revit-ref.jpg
    What i did: i exported from 3ds into .sat. then imported in cad software DraftSight (free); which seems its .sat import system works more efficiently than autocad's. Then exported to dxf and everything at last was imported correctly in revit ( as mass ).

    Straight from 3ds or autocad to dxf, it wont work also.

  10. #10
    Member JeffreyMcGrew's Avatar
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    Quote Originally Posted by lcolnaghi View Post
    Jeffrey, i did a few tries in dwg format also, straight from max to cad then revit. No luck!
    Through the day i've found a solution for it though: there was an edge which revit was exporting in .sat file split in half (as shown in snapshot - it's the basic solid swept blend before using ffd in max ); which was becoming trouble when exported back to revit from max.
    Wow, sounds like a straight-up bug then! Glad you got it worked out.

    I've used Autodesk Fusion to 'scrub' files too. It works better than AutoCAD in my experience.

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