Forums >> Revit Building >> Technical Support >> Dwg to RFA and Materials.

Canhatelier

active

Joined: Sun, Apr 10, 2011
11 Posts
No Rating

Hello,

I have a big question about dwg files turn into revit family's.

I've downloaded some furniture from a manufacture designer, but the files are all in dwg or 3ds, and i want to make furniture family's in revit with those files.

I did the family and all the process that have to be done. Metric furniture -> insert cad etc etc....

But when i render, the materials go crazy on the model.

Can someone help me? is there something that i must do in dwg before importing to revit?

In this post there are 2 pictures of the dwg file and the render in revit.

I would appreciate your help

Thank you, Canhatelier

Attached Images

This user is offline

Typhoon

site moderator|||

Joined: Tue, May 22, 2007
5921 Posts

The issue is they are not 3D solids, they are 3d faces (mesh), I don't know if this gonna work but you need to convert those objects in Solids, use the CONVERTTOSOLID or SURFSCULPT in CAD to convert those mesh...

You have some "limitations" to follow, watch the image....

Attached Images

-----------------------------------

I Hope and I Wish to LEARN  more, and more, and more.... REVIT

This user is offline

Canhatelier

active

Joined: Sun, Apr 10, 2011
11 Posts
No Rating

Thank you...

I've tried the surfsculpt and gives me this: "Select surfaces or solids to sculpt into a solid:  1 was filtered out"

When i try the other command convtosolid : "Object cannot be converted."

Can you see the file and give it a try? If the problem is how the sofa was made in 3D or if i'm doing something wrong to turn it to a solid.

Many thanks, Canhatelier

This user is offline

Canhatelier

active

Joined: Sun, Apr 10, 2011
11 Posts
No Rating

i have seen revit families that are dwg imported, and the materials don't have that strange behavior.maybe i'm doing something wrong or have to do certain commands in autocad. don't know!

In revit city downloads there are several sofas or beds that are dwg imported, and when i render in revit the materials goes well.

Thats why i'm trying to understand how they do that! And if, somewhere, there is a tuturial, showing how we prepare a dwg file to convert in revit family.

This user is offline

WWHub

site moderator|||

Joined: Tue, May 16, 2006
13079 Posts

DWG files in a family are not converted, they are just imported in 3D.  They are NEVER exploded.    They must have surface planes on seperate layers for each material.  In Revit, the material can then be changed by layer.

This user is offline

Canhatelier

active

Joined: Sun, Apr 10, 2011
11 Posts
No Rating

I said converted, but that wasn't what i mean, the right word is imported dwg to revit metric furniture.

But i think the only thing that i must do is make surface planes in dwg file, and that's what i don't know how to do.

in dwg file the pillow is a block, the other pillow is another block, etc etc...each one has a layer, but each block are lines.

moral of my question, is how to make several surfaces in, for example, the pillow and convert those lines that form it, in dwg, to several surfaces of the pillow so the materials in revit don't behave weird.

is there any tuturial?

Many thanks for your help.

This user is offline

WWHub

site moderator|||

Joined: Tue, May 16, 2006
13079 Posts

The file you posted is already 3D faces as we can see in the first image.  All you have to do is assign the material you want to the appropriate layers.

If this import did not have faces, then it would not render but yours did.  Patterned materials on complex shapes may not render well on faceted objects so good-luck with that.  If these are your materials, then you may not get it like you want it. 

I believe Typhoon's post would solve the render problems because it would get rid of the facets and you don't need to create new ones.  Just edit the file per Typhoons instructions.

This user is offline

Canhatelier

active

Joined: Sun, Apr 10, 2011
11 Posts
No Rating

I have set those materials just for testing, and how fabric materials ajust to the model.

But yeah i'll study more what typhoon said, and if i accomplished what i want, to the fabric don't have weird render, i'll post here the solution so other users may do it too...

If only manufacturers designers had more rfa files...but they only have .3ds or .dwg. it's hard to find modern furniture to revit (yes you have sites that you pay for it) but i'm an university student of architecture so for know i'll try free stuff, and one day pay for it.

Thank you all

This user is offline

WWHub

site moderator|||

Joined: Tue, May 16, 2006
13079 Posts

I suggest you talk to your professor and suggest that the school maintains a library of available elements.  If everybody has crappy furniture, then that should not affect your grades.

This user is offline

paolocasa1

active

Joined: Tue, Sep 13, 2005
58 Posts

you could use this external command http://puntorevit.blogspot.it/2014/01/3d-dwg-to-rfa-external-command.html

This user is offline

View Website

3D DWG as RFA too big

6

DWG 3D TO RFA CONVERSION?

5

Multiple import dwg as multiple Family

1

Are there any dwg /dxf files to download, all I see is *.rfa

1

Systems Furniture RFA Issues

1