Inventor General Discussion

Inventor General Discussion

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Member
sholger
Posts: 4
Registered: ‎11-30-2012
Message 1 of 9 (419 Views)

convert Inventorfile to stl

419 Views, 8 Replies
11-30-2012 07:16 AM

I've converted a Inventormodel with the exportfunktion in a stl-file.

This morning I get the Model produced with a SLS (Laser-Synther) and it was ca 2,54x the size it should have...
So they said the lenght must have been converted to inch...

Then I convert a file to stl and then to a step it seems that it becomes in every conversation 2,5x the size....

So what's the matter?


Please excuse my bad style (I'm from Germany).
I hope sombody can help me.

With friendly regards,

Holger

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Mark_Wigan
Posts: 460
Registered: ‎03-07-2006
Message 2 of 9 (415 Views)

Re: convert Inventorfile to stl

11-30-2012 07:54 AM in reply to: sholger

hi, can i ask if you had set your units to metric mm, or is it set to imperial inches?

 

via options in tools, document settings

 

if it was imperial & you need to swap over to metric, then you will have to edit the dimensions and type mm after the value to make it the correct size.

best regards,
- Mark

(Kudo or Tag if Solved - it may help others)

PDSU 2015 Windows 8.1, 64bit.

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Curtis_Waguespack
Posts: 2,987
Registered: ‎03-08-2006
Message 3 of 9 (413 Views)

Re: convert Inventorfile to stl

11-30-2012 08:13 AM in reply to: sholger

Hi sholger,

 

I think you can click the Options button when saving out the STL file and set the *.stl units to match your document units. 

 

Note that this has changed over the years, so if you don't see the option it might be due to the version of Inventor you're using (I seem to recall a bug with this in earlier versions).

 

I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com



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Member
sholger
Posts: 4
Registered: ‎11-30-2012
Message 4 of 9 (397 Views)

Re: convert Inventorfile to stl

11-30-2012 01:40 PM in reply to: Mark_Wigan

The Inventorfiles (ipt) are corekt
So are the drawings / sketches

Member
sholger
Posts: 4
Registered: ‎11-30-2012
Message 5 of 9 (396 Views)

Re: convert Inventorfile to stl

11-30-2012 01:44 PM in reply to: Curtis_Waguespack

I have reimported the stl file to check:
it says, that the file is metric...




Quelldatei:...Prototyp\Lok mini 50.stl
Translator-Typ:STLSendendes System: 
Autor: Translationszeit:00:00:00
Optionen
Importtyp:Nicht zutreffend
Zu importierende Objekttypen:Netze
In Reparaturumgebung importieren:Unknown
Baugruppe als einzelnes Bauteil importieren:Nicht zutreffend
Flächen erstellen als:Nicht zutreffend
Mehrere Volumenkörperbauteile als Baugruppe importieren:Unknown
Einheiten:Millimeter
Bauteile beim Laden überprüfen:Unknown
Autom. heften:Unknown
Erweiterte Korrektur aktivieren:Unknown
Farbfolge Rot/Grün/Blau:RGB
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Curtis_Waguespack
Posts: 2,987
Registered: ‎03-08-2006
Message 6 of 9 (389 Views)

Re: convert Inventorfile to stl

11-30-2012 02:11 PM in reply to: sholger

Hi sholger,

 

To clarify, I think you'll need to re-save the file as an STL and use the Options button to ensure the units are set correctly:

 

Autodesk Inventor STL units.png

 

I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com



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Member
sholger
Posts: 4
Registered: ‎11-30-2012
Message 7 of 9 (385 Views)

Re: convert Inventorfile to stl

11-30-2012 02:16 PM in reply to: Curtis_Waguespack

Which program did you use?

Or how do you get the dialog save copy as?

I'm confused...

Greetings

Holger

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Curtis_Waguespack
Posts: 2,987
Registered: ‎03-08-2006
Message 8 of 9 (381 Views)

Re: convert Inventorfile to stl

11-30-2012 02:21 PM in reply to: sholger

 

 

Hi sholger,

 

From within Autodesk Inventor

 

Select Save AsSave Copy As, then use the Options button shown previously.

 

 

Also see this link:

Export parts and more

look for the STL File Save As Options

 

I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com

 

 



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JDMather
Posts: 28,055
Registered: ‎04-20-2006
Message 9 of 9 (378 Views)

Re: convert Inventorfile to stl

11-30-2012 02:26 PM in reply to: sholger

It has been reported here many time (a search might turn up previous threads) that the Options>Units must be set on saving stl files.

 

Unfortunately it has also been reported here (a search might turn up previous threads) that Inventor Import of stl cannot be relied on as a check of size as Inventor does not import the files correct units in some cases.

 

There are other software programs that can be used to verify the geometry size.

The best bet is to indicate to the person who will run the job what the bounding box size for the part should be.

 

stl units.png

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