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    • Rahul Ponginan

      Please click here for a short but important announcement   03/26/17

      Dear Users Our Commercial and Academic users around the world can use these same forums here as before i.e. the Altair Support Forum , Commercial users from India with solver queries can go to the Solver Forum for India Commercial Users , Academic Users from India and AOC India Participants are requested to go to the Forum for India Academic Users and AOC India Participants , We will be tending to all queries in all the forums promptly as before, thank you for your understanding. 

polyNURBS model stansfer to stp or stl file failure

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Hi there,


I have met a problem with Inspire concerning polyNURBS modelling and transfer the model to stp and stl file. After using the optimization function I use the polyNURBS function in Inspire to build up the model. Then I tried to transfer the model to stl file for 3D printing, but the model was damaged when I open it in 3D printing software. I also try to transfer it to stp file to try to open it in solidworks, but I found the polyNURBS solid change to surface from solid part during the file transfer from stmod format to stp format, and damages can be found on the polyNURBS surface after the transfer. I have try many times but always get the same problem. I wonder what was the reason of this and how to fix it. I have attached the relative files.

Thank you




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Thanks for sharing files.I able to open .stl shared files in Inspire and SimLab. Would be nice if you can share, screenshot of the error which you are getting in 3d printing software.Even you can check with 3d printing software for import issues.

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Hi Rahul,


Thank you for the reply. Below are the screenshots of the error I've met.


The 1st picture is the image of the 3D printing software I used( Its name is UP. ), and that's how it shows when I open the stl file in it.





The second screenshot was the situation when I open the stl file in solidworks and  clicked 3D print in menu.5a2e00b85b245_solidworks3Dprint.thumb.JPG.99fbf62e5925b6905b3ead95aaa043dd.JPG


The 3rd screenshot was the situation when I want to transfer the model to stl format in SolidWorks from prt format.5a2e01c9472e8_solidworksprttostl.thumb.JPG.c5aef2ebaf3cbfcde0e0d33bd17f2be4.JPG



Could you please give me some suggestions, or if you can successfully process the 3D printing, could you tell me how you did it.


Many thanks! 

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For time being i suggest you to export or save Stl file for Polynurb created design & import in UP/Solidworks. Leave all four corner and mid part.This will help to know the problem is with Polynurb part or not?I also see overlapping of solid in some region. PFB screenshot for same.


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