Ealiom Posted May 22, 2006 Share Posted May 22, 2006 I have had this cry for help in the Autocad forum but in the off chance this is a max Issue ill have a wee cry in here too. Ive recently tried importing a model from AutoCad 2004 & 2007 into Max8 and i find that all the curves on the solids are faceted! Despite tinkering with the Facetres values within AutoCad and the smoothing values on import i cannot get the solids to appear as they should. Has anyone else had this problem? Can anyone help me with a solution? please! Link to comment Share on other sites More sharing options...
vizwhiz Posted May 22, 2006 Share Posted May 22, 2006 Ealiom what smoothing values are you refering To? have you Tried To set The ACIS deviation in max To 0.01 or etc value ?? lower is better but = more Time ** just an idea, but it usually works for me Thanks randy Link to comment Share on other sites More sharing options...
schmoron13 Posted May 23, 2006 Share Posted May 23, 2006 it's an Acad issue. I remember someone at Autodesk telling me how to adjust the setting. try looking in the help files. i'll see if I can dig up my notes from last summer. Link to comment Share on other sites More sharing options...
gfa2 Posted May 23, 2006 Share Posted May 23, 2006 By importing do you mean linking. If you are linking your ACAD file into max (the best way to do it IMO), then you need to go under the file link settings and change the "Surface deviation for 3D solids" from 1.0 to 0.1. If you are still getting a little faceting you can drop it even lower, but 0.1 should smooth everything out. BTW, you won't be able to link a ACAD 2007 file into max. You'll have to save your file back to the 2004 format in order to link it. Link to comment Share on other sites More sharing options...
Brian Smith Posted May 23, 2006 Share Posted May 23, 2006 Good luck with this one. I had this problem when I first played around with 3D in AutoCAD and I don't think I ever found a solution. I think I just divided the plines individually before turning into solids. Of course you can control the curves of the plines once you bring in Max. My recommendation is don't bother with 3D modeling in AutoCAD. It's like trying to do carpentry with a hand saw rather than a table saw. Link to comment Share on other sites More sharing options...
gfa2 Posted May 23, 2006 Share Posted May 23, 2006 Good luck with this one. I had this problem when I first played around with 3D in AutoCAD and I don't think I ever found a solution. The settings I outlined above are the solution, I use it every single day and twice on Sunday. Link to comment Share on other sites More sharing options...
tanni Posted May 23, 2006 Share Posted May 23, 2006 That is our regular problem to solve it, what we do…. 1.select the mesh(Element) in max and make auto smooth, 2.draw it in max 3. import the curve as shape then add the modifier. i think your client wont mind... Link to comment Share on other sites More sharing options...
Ealiom Posted May 23, 2006 Author Share Posted May 23, 2006 Thank you for the posts. Thanks 'gfa2' the value did improve the quality of the curves. However it smoothed out the curve only up to a point. There is still a very obvious facetting. I have linked the file as instructed and set the surface deviation to 1, 0.1 and even 0.01. Anything below 1 seems to make no difference to the render. I would have prefered to import the file without linking. Although i can see no reason why this wouldnt stop me completing this project. I am cautious by nature and would not like to have a function of the linked file impeding my work at a later date. It seems like such an obvious task, to import a solid from one product to the next. Yet at the moment it is beyond me. I (like most of us) have a deadline creeping over the horizon and i do not need to tell you that this is becoming rather 'vexing' If anyone can find a solution i would be extremely grateful, thanks! Link to comment Share on other sites More sharing options...
tanni Posted May 23, 2006 Share Posted May 23, 2006 I dont know did you do auto smooth in max to solve your problem. Link to comment Share on other sites More sharing options...
ronel Posted May 23, 2006 Share Posted May 23, 2006 there are two ways embedding object from autocad to max..... 1. file linking - this will not resolve all those solid curves so avoid doing it if you have to work with more curves 2. import-this is the best way to do. after you imported the object to max, select the object you want to snoth, then go to mesh modifier and adjust it to auto smooth or make some teting that will fit you. Link to comment Share on other sites More sharing options...
gfa2 Posted May 23, 2006 Share Posted May 23, 2006 I have linked the file as instructed and set the surface deviation to 1, 0.1 and even 0.01. Anything below 1 seems to make no difference to the render. OK, at this point you will need to apply a smooth modifier to that layer and then choose Auto Smooth. That should take care of it, let us know if you still have problems. If you could show us a rendering of the problem that may help too. Link to comment Share on other sites More sharing options...
abl_langs Posted May 23, 2006 Share Posted May 23, 2006 Originally Posted by Ealiom I have linked the file as instructed and set the surface deviation to 1, 0.1 and even 0.01. Anything below 1 seems to make no difference to the render. Are you using metric as your units? try 0.0001m (or lowest possible value) in the surface deviation.. Link to comment Share on other sites More sharing options...
Ealiom Posted May 23, 2006 Author Share Posted May 23, 2006 Thank you all for your help. Tinkering with all of the settings you have guided me too has produced a render to my liking. Looking at the curavture in the larger solids a faceting curve can be seen. However it is no where near as pronounced as before. I can begin remodelling now safe in the knowledge that it will work Also, and rather strangely i have found that if i set all the values within AutoCad to there maximum, Facetres etc, before begining a model. Then there is no faceting when i import it into max I do not see how this should effect current modelled solids, but it does seem to ? As I have almost completed this model, remodelling on the timescale I have is out of the question. I shall remember it for next time! Again thank you all very much. I am off to please some clients now Link to comment Share on other sites More sharing options...
theon Posted May 23, 2006 Share Posted May 23, 2006 Hi From Greece!!! 1. Import your file as AutoCAD Drawing (*.DWG) and not as Legacy AutoCAD 2.Ghange the value of "Surface deviation for 3DSolids" to 0,001 3. Select Autosmooth and leave 15,0 for Smooth angle This will solve the problem!!! It's May and the weather here is already too hot:cool: Link to comment Share on other sites More sharing options...
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