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Importing Autocad Models to 3D Max

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Importing Autocad Models to 3D Max - Page 2 Empty Importing Autocad Models to 3D Max

Post by render master Thu May 14, 2009 1:52 am

First topic message reminder :

Importing Autocad Models to 3D Max - Page 2 Title-1
This topic was always asked eversince, so i bring it now here, my workflow on importing Autocad Models to 3d Max.

I would like to share my workflow the proper way of linking Autocad Models to 3d Max. The procedures, the pros and cons and some important issues concerning the method.


Procedure 1

1. In Autocad I must first establish the units in meters as well as in 3d max. Although in Autocad you can model in any unit and rescaled it during the file linking process. But the issue there is the memory and the regeneration of your models in modeling procedures. It is okay if you are modeling a simple objects, but when it comes to a more complicated models, it meant a lot.

Now let me show this image to explain something about smoothing curves surfaces. If you are a cad modeler, and your intention is to render it in Autocad, this two command will be familiar to you. VIEWRES and FACETRES.

First is the VIEWRES Command
Importing Autocad Models to 3D Max - Page 2 10-importing

And the second is the FACETRES COMMAND
Importing Autocad Models to 3D Max - Page 2 11-import

This two commands will clearly state how to manipulate all those curve and arched models you have.

You can also access it via Option commands.
Command: Options
Importing Autocad Models to 3D Max - Page 2 8-importing

Let me now give you some illustration of the work flows.

Here are one Sample Cad Models with Low Facetres and Viewres value
As you can see, all the arch, and sphere are all segmented
Importing Autocad Models to 3D Max - Page 2 12-lowfacetes

Same model with High Facetres and Viewrtes Value
Importing Autocad Models to 3D Max - Page 2 13-highfacetes

The amount of both Facetres and Viewres when adjusted will significantly smooth the surface of both
the arched and the sphere models.

The question is, Is it necessary to adjust the amount of the Facetres and Viewres value? The answer will be base on your preference in modeling. If your intention is to render it in Autocad itself, then its a must, otherwise you will have all those segmented rendered object. Now if your intention is to bring it to your 3D Max program for final rendering, I advised to make a closer look to some of the illustration and procedures that follows.

Procedure 2 - Units Settings

I will be using the samples with Low Viewres and Facetres value.
AutoCad Units = millimeter

Set my units first in 3d Max to meters

-Open 3D Max and change my unit to meter.
-Go to Customized, then to Units
-Change the Sytem Unit Settings, and Display Units Scale

Importing Autocad Models to 3D Max - Page 2 2-importing


Procedure 3 - FILE LINK MAMANAGER

-Go to File Menu, then File Link Manager
Importing Autocad Models to 3D Max - Page 2 3-importing-1

-Then look for my Autocad Files
Importing Autocad Models to 3D Max - Page 2 4-importing

With no rescaling, i can get a result of this. All my sphere and arch model will get a smooth surface. Well its fine as I said especially if you are dealing with just simple objects, but when it comes to a more complicated ones, it meant a lots, regeneration of your drawing will takes time and the memory usage will boost up.
Importing Autocad Models to 3D Max - Page 2 Importing-1


Now let us reset our 3d Max.
Or just detached your Autocad Models by hitting Detach Button.

On the File Link Manager Dialog Box go to Files and hit Detach, this will unload the models in the scene.
Importing Autocad Models to 3D Max - Page 2 Importing-2

Redo the File Linking procedures, but for this time, hit rescale on dialog box shown
Importing Autocad Models to 3D Max - Page 2 Importing-3

I will now get like this image
Importing Autocad Models to 3D Max - Page 2 Importing-4
It’s okay if you have those segmented arcs and sphere, we will fixed it sooner. Regeneration of the drawing is quite faster and the memory it will take is much smaller. We will let 3D Max to do the job in smoothing the models

Procedure 4

To continue, go to Files of the File Link Manager Dialog Box. Tick the box on the Reload Option. Then press Reload. On reload option box, go to Basic then on Smooth Angle, adjust the value to 45.0, and on Maximum Surface Deviation for 3d Surface, make it 0.0m. Press ok, and all the arc and sphere model will smoothen. This is useful specially if you are dealing with large models. So you may or may not adjust both the viewres and facetres value to a higher amount that only takes so much time regenerating your models.
Importing Autocad Models to 3D Max - Page 2 Importing-6

This is now the final view after adjusting the Smooth angle and Surface deviation.
Importing Autocad Models to 3D Max - Page 2 Importing-7

Final Composition with some Opacity Mapping for the Trees
Importing Autocad Models to 3D Max - Page 2 Importing-8

Rendered Image Sample
Importing Autocad Models to 3D Max - Page 2 2-6

And another Sample
Importing Autocad Models to 3D Max - Page 2 3-4


Procedure 5

Sometimes we dont have to model all in Autocad. Lines and splines are just enough. In these example, the handrail i use are just a poly lines
Importing Autocad Models to 3D Max - Page 2 Importing-9

File Link to 3D Max
Importing Autocad Models to 3D Max - Page 2 Importing-10

Adjust the Spline Settings on the Reload Option, and i got this tubular Handrails
Importing Autocad Models to 3D Max - Page 2 Importing-11

Or a rectangular handrails
Importing Autocad Models to 3D Max - Page 2 Importing-12

Hope it helps.


Last edited by render master on Mon May 25, 2009 4:21 am; edited 5 times in total
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Post by johnolive100 Wed Aug 04, 2010 10:59 pm

tanong lang po sir saa ba makikita yong file manager para maka link po ako hindi ko kasi makikita, sana matulongan po nyo ako. thanks

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Post by render master Wed Aug 04, 2010 11:07 pm

johnolive100 wrote:tanong lang po sir saa ba makikita yong file manager para maka link po ako hindi ko kasi makikita, sana matulongan po nyo ako. thanks

its on 3D Max File Menu
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Post by jasperjohn Sun Aug 22, 2010 9:52 pm

newbie here..sir, ano kaya naging problema sa ginawa ko.. i just follow the flow of your intstructions, pero yung outcome eh lumobo yung mga objects ko? bakit po kaya? TIA
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Post by render master Sun Aug 22, 2010 11:28 pm

jasperjohn wrote:newbie here..sir, ano kaya naging problema sa ginawa ko.. i just follow the flow of your intstructions, pero yung outcome eh lumobo yung mga objects ko? bakit po kaya? TIA

Review your settings
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Post by qcksilver Sun Aug 22, 2010 11:35 pm

jasperjohn wrote:newbie here..sir, ano kaya naging problema sa ginawa ko.. i just follow the flow of your intstructions, pero yung outcome eh lumobo yung mga objects ko? bakit po kaya? TIA

maybe unwanted lines,delete mo mga lines na hindi kailangan
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Post by jasperjohn Mon Aug 23, 2010 7:44 pm

i see.. thanks mga bro
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Post by jaybin Mon Aug 30, 2010 10:22 pm

mga sir bakit po pag nagiimport po ako sa max eh puro gray po yung kulay ng building ko.newbie lang kasi mga sir,student pa lang.hehe..parang ganto po..
Importing Autocad Models to 3D Max - Page 2 Screenmn

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Post by render master Tue Aug 31, 2010 12:07 am

@ jaybin

- on file link manager, before linking the files, go first to presets, click presets you want to use. (there are only two on the list, one is for revit and the other is for autocad) select Last Used Settings, then click on modify. under Modify, go to Adavance -->> Derive Autocad Primitives by: on the list select Color. save your settings and proceed on the linking process
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Post by jaybin Wed Sep 01, 2010 1:15 am

yes,maraming salamat sir.godbless po..

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Post by ronzcobella Sun Oct 17, 2010 3:10 am

thank you so much render master...this is what i am looking for...i am good in cad and you answers my question specifically...mali pala yung gngwa ko kaya hindi smooth mga curve...salamat po tlga..i tried it already...salamat....salamat...salamat...Godbless po...
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Post by sword_fish Sun Oct 17, 2010 6:52 pm

Problem solved!Maraming salamat sir ronel. Importing Autocad Models to 3D Max - Page 2 290602
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Post by qcksilver Wed Dec 29, 2010 12:03 am

Importing Autocad Models to 3D Max - Page 2 10252443



tanong ko lang sir onel, sinundan ko naman yung lahat sa pag file link bakit yung model ko nagiging parang buntis siya sa 3dmax, flat naman siya sa autocad and chamfer lang yung edge.
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Post by render master Wed Dec 29, 2010 12:58 am

try mo dagdagan maximum surface deviation, say .05 or .1...smoothing angle 45 pa rin
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Post by qcksilver Wed Dec 29, 2010 6:53 am

render master wrote:try mo dagdagan maximum surface deviation, say .05 or .1...smoothing angle 45 pa rin

ayaw po, check - uncheck ko na lahat ayaw Sad
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Post by render master Wed Dec 29, 2010 8:54 am

share mo sir ang cad files kahit iyang element lang na iyan...troubleshoot natin.
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Post by mez Wed Dec 29, 2010 9:07 am

thanks a lot for sharing! thumbsup
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Post by qcksilver Wed Dec 29, 2010 10:29 pm

sir onel ito po yung file, kahit po kasi sa ibang mga object basta nagchamfer ako laging lumolobo
http://www.2shared.com/photo/QzyUCR62/a_online.html
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Post by molar_3dx Wed Dec 29, 2010 11:42 pm

salamat po...... makakatulong sakin to.......... 2thumbsup
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Post by render master Thu Dec 30, 2010 12:31 am

qcksilver wrote:sir onel ito po yung file, kahit po kasi sa ibang mga object basta nagchamfer ako laging lumolobo
http://www.2shared.com/photo/QzyUCR62/a_online.html

nacheck ko na ang files... untick mo lang sir iyong auto-smooth adjacent faces
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Post by qcksilver Thu Dec 30, 2010 12:42 am

Cool Importing Autocad Models to 3D Max - Page 2 808695 , big help sir, thanks Importing Autocad Models to 3D Max - Page 2 606327
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Post by james_iha Sat Jul 16, 2011 11:49 pm

thanks you for this wonderful tutorial render master.... keep on helping.
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