Error import STL Files

[Ianhamilton]

I have been trying to import STL files into AutoCAD 2020. Every time i try i get an error saying that only V7 and V8 DGN files are supported. That seems a strange message considering i am trying to import an STL. I have tried using fusion 360 to export to a few other file types but still the same error. Just spent the last 45 minutes trying to google the solution but have yet to find it.

[Patchy]

Are you sure Autocad can import .STL?

[imadHabash]

Hi,

as the message said ... you have to make sure that your STL file is is version V7 or V8 . also make sure that you have a trusted and usable file . 

[Patchy]

That message said .DGN v7 or v8 (Microstation file)

[TerryDotson]

The STL format is not an option in the formats listed under the IMPORT command.  I'm not aware of a OOTB method to import them.

[Ianhamilton]

I did try to import as a SAT, OBJ, and IGES but got the same error message every time.

[Patchy]

Use the correct Command to import and because plain Autocad can't import everything.

You need different Autocad (Vertical products)

[pendean]

You need to use INVENTOR or these other offerings https://all3dp.com/2/stl-to-dwg-how-to-convert-stl-files-to-dwg-autocad/

[Ianhamilton · Accepted solution]

OK so i found an online converter to turn the STL into a DXF file. This was able to open in autocad. I then used the CONVTOSURFACE command followed by the CONVTOSOLID command to turn it into a regular 3d solid model. And of course when i was done editing i set FACETRES to 10 and then used the STLOUT command to turn it back into and STL.