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Walls too thin? [message #6229] Wed, 02 September 2009 11:19 UTC Go to next message
avatar SeveQ is currently offline SeveQ
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Registered: June 2009
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Hi there,

I'm still trying to create this double DIN adapter. Since it is much too expensive I'm trying to make it hollow. A file says a thousand words.

I get the following error message:

Quote:


We could not determine the size and/or volume of your model due to an invalid model structure. Please investigate the problem and try again.



I guess the walls are too thin. But my software says they are more than 2mm everywhere. I'd absolutely appreciate it if someone could investigate this issue... again.

Thanks!

Hendrik

[Updated on: Wed, 02 September 2009 11:39 UTC]

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Re: Walls too thin? [message #6230 is a reply to message #6229 ] Wed, 02 September 2009 12:31 UTC Go to previous messageGo to next message
avatar Youknowwho4eva is currently offline Youknowwho4eva
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I got that error when I exported a stl in inches and in an attempt of being lazy and just shrinking the file, I selected mm on shapeways. What software are you using?

The Mad Moder
michael@shapeways.com
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Re: Walls too thin? [message #6231 is a reply to message #6230 ] Wed, 02 September 2009 12:40 UTC Go to previous messageGo to next message
avatar SeveQ is currently offline SeveQ
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I use Cinema4D R11 in combination with MeshLab to check for holes and invert face normals. C4D seems to have a bug in its STL export plugin. It always exports STL with inverted normals. But that's not the problem. If it had been, Shapeways would have sent me another message.

An upload in WRL format by the way results in the same message. I haven't tried any other format so far.

In C4D my default unit is millimeter, so I think I have to choose the same unit in the Shapeways upload dialog. I don't want to get an object that is 25.4 times the size that it's actually supposed to have. Smile

[Updated on: Wed, 02 September 2009 12:57 UTC]

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Re: Walls too thin? [message #6232 is a reply to message #6231 ] Wed, 02 September 2009 14:19 UTC Go to previous messageGo to next message
avatar Youknowwho4eva is currently offline Youknowwho4eva
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Try it just to see if it works, if it does make it too big just delete it. Then you'll know it is too small

[Updated on: Wed, 02 September 2009 14:20 UTC]

The Mad Moder
michael@shapeways.com
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Re: Walls too thin? [message #6249 is a reply to message #6232 ] Thu, 03 September 2009 01:10 UTC Go to previous messageGo to next message
avatar crsdfr is currently offline crsdfr
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Here's the problem bud. Your bottom plane is just a face over the hollow sections.

Just so you know, your hollow section is going to be full of build powder with no way to get it out unless you drill a hole into it.

index.php?t=getfile&id=1229&private=0

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Re: Walls too thin? [message #6252 is a reply to message #6229 ] Thu, 03 September 2009 12:41 UTC Go to previous messageGo to next message
avatar SeveQ is currently offline SeveQ
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Err, I'm afraid I haven't got it, yet.

Please have a look at the picture I have attached. As you can see the holes in the bottom are open. I've also checked the inside of the holes. There is no face covering the holes.

  • Attachment: Holes.jpg
    (Size: 49.47KB, Downloaded 121 time(s))

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Re: Walls too thin? [message #6254 is a reply to message #6252 ] Thu, 03 September 2009 13:32 UTC Go to previous messageGo to next message
avatar SeveQ is currently offline SeveQ
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Here is another picture I've just created with MiniMagics (thanks to Shapeways for this advice). Also, no face covering the holes in the bottom of the object.

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Re: Walls too thin? [message #6326 is a reply to message #6254 ] Sun, 06 September 2009 13:03 UTC Go to previous messageGo to next message
avatar bartv is currently offline bartv
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Hi SeveQ,

I just uploaded your STL file with size unit mm and everything went fine. I also manually checked the model and it's all perfectly manifold, normals oriented fine etc.

So I'm not sure what the problem is?

Cheers,

Bart

Community Manager Europe | Shapeways
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Re: Walls too thin? [message #6328 is a reply to message #6229 ] Sun, 06 September 2009 14:39 UTC Go to previous messageGo to next message
avatar SeveQ is currently offline SeveQ
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Eh, what? Have you Shapeways people changed something to the checking algorithms? Now it works and I definitely haven't changed anything to the object, just uploaded the same file again. *confused* Shocked

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Re: Walls too thin? [message #6364 is a reply to message #6328 ] Tue, 08 September 2009 18:18 UTC Go to previous messageGo to next message
avatar bartv is currently offline bartv
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I checked and I don't believe we did an update after you posted your message. Not sure what caused this..

Cheers,

Bart

Community Manager Europe | Shapeways
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Re: Walls too thin? [message #6366 is a reply to message #6229 ] Tue, 08 September 2009 18:30 UTC Go to previous message
avatar SeveQ is currently offline SeveQ
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Huh! Weird... Confused

Well then, I'd say, consider this issue solved. Thanks for your help though.
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