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Repair needed on Character model for 3D Printing [message #57306] Fri, 23 November 2012 05:12 UTC Go to next message
avatar atomicfx  is currently offline atomicfx
Messages: 8
Registered: November 2012
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Junior Member
Hey guys,

I recently had this character modeled for me but it was not really modeled very well for printing purposes. The model was supposed to be hollow throughout, which it is not. There was to be a hole at the bottom of the base pedestal for the removal of excess powder, which there is, but the hole does not go through the whole character, only the base. Also, the character was modeled in various separated elements and then kind of thrown together instead of merging them and making the least amount of shells. Now a lot of the geometry is penetrating throughout the model. I tried putting an stl of the model through Netfabb to see if it could repair the problems but it was not able to fix them. Plus the geometry that was penetrating before, starting showing really bad seams when Netfabb merged them..
Can someone please let me know if they would be able to repair this model to be fully printable and how much it would cost? I pretty much spent my whole budget getting this made so I can't offer too much. I'd really appreciate any help I can get.

Thanks!

[Updated on: Mon, 26 November 2012 04:03 UTC]

Re: Repair needed on Character model for 3D Printing [message #57356 is a reply to message #57306 ] Fri, 23 November 2012 23:01 UTC Go to previous messageGo to next message
avatar rangio  is currently offline rangio
Messages: 13
Registered: February 2011
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hmm... I've seen it. I separated the shells then made some boolean operations to fix it. it's some 25 different meshes and I've tried just with the character and the base. it's an harsh work but it functions. you could even do it by your own. don't panic!

btw why don't you ask the author to fix it for you? Surprised
Re: Repair needed on Character model for 3D Printing [message #57358 is a reply to message #57356 ] Fri, 23 November 2012 23:24 UTC Go to previous messageGo to next message
avatar atomicfx  is currently offline atomicfx
Messages: 8
Registered: November 2012
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Hi Rangio,

I have been trying to get the author to fix it but he hasn't responded to any of my messages to him about these issues with the model. The last thing he told me was that he was going on another business trip. So I am kind of stuck. I don't have a lot of 3d modeling experience. I am an animator and graphic artist but never really got into modeling.

-David
Re: Repair needed on Character model for 3D Printing [message #57359 is a reply to message #57358 ] Fri, 23 November 2012 23:55 UTC Go to previous messageGo to next message
avatar Fredd  is currently offline Fredd
Messages: 350
Registered: November 2011
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David, hopefully the model was a combination of several manifold separate objects. SW will use a boolean union on all the objects to create 1 manifold shell, if the parts are not to little. You could always upload the stl to http://cloud.netfabb.com/. It will perform boolean union on the parts, and fix certain errors. A model can be confusing if the principles are not understood. If the Cloud service cannot fix it, you have been screwed over by the modeller
If so, post the name least for the shame value.

Keith
.


Have any questions regarding Blender, and need fast answers, you are always welcome at the IRC Server Freenode, channel #blender. As a bonus, several there have experience in modelling for 3D prints.

Keith
Re: Repair needed on Character model for 3D Printing [message #57361 is a reply to message #57359 ] Sat, 24 November 2012 00:36 UTC Go to previous messageGo to next message
avatar rangio  is currently offline rangio
Messages: 13
Registered: February 2011
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I didn't know SW can do the boolean union, that's good news for you lah!
Re: Repair needed on Character model for 3D Printing [message #57369 is a reply to message #57306 ] Sat, 24 November 2012 04:48 UTC Go to previous messageGo to next message
avatar atomicfx  is currently offline atomicfx
Messages: 8
Registered: November 2012
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I tried to upload the model to Shapeways and it said it would cost somewhere around $2,000 - 3,000. I'm assuming that's because the model was not fully hollowed out and the size of the model was way too large instead of 6 inches tall. I've tried using Netfabb with this model but Shapways gave me an error when I uploaded it. Plus, a lot of the fine details were lost during the boolean process and the seams looked really bad.

[Updated on: Sat, 24 November 2012 04:48 UTC]

Re: Repair needed on Character model for 3D Printing [message #57387 is a reply to message #57369 ] Sat, 24 November 2012 17:32 UTC Go to previous messageGo to next message
avatar Fredd  is currently offline Fredd
Messages: 350
Registered: November 2011
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Senior Member
Remember when I mentioned that SW will perform the boolean op if it was not too little. The case was proven. The nettfab cloud service will perform all the booleans needed no matter the size.
I am uploading the file now to see if there are normals not pointing the correct direction. For example if you placed a smaller sphere inside a larger sphere and joined them, and all normals are facing away from the center, SW will not recognize the model as having a hollowed out interior. Now if you flip the interior spheres face normals, SW will recognize the model is hollow. Will be back after experimenting on your model.


Have any questions regarding Blender, and need fast answers, you are always welcome at the IRC Server Freenode, channel #blender. As a bonus, several there have experience in modelling for 3D prints.

Keith
Re: Repair needed on Character model for 3D Printing [message #57388 is a reply to message #57387 ] Sat, 24 November 2012 17:50 UTC Go to previous messageGo to next message
avatar atomicfx  is currently offline atomicfx
Messages: 8
Registered: November 2012
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Thanks Fredd, for trying to figure out how to fix my model. Much appreciated! Looking forward to hearing the results of your experimenting.
Re: Repair needed on Character model for 3D Printing [message #57401 is a reply to message #57388 ] Sun, 25 November 2012 00:49 UTC Go to previous messageGo to next message
avatar Fredd  is currently offline Fredd
Messages: 350
Registered: November 2011
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Atom, I looked at it. A few verts needed fixing. Actually the entire mesh was well modeled,the hollowed out areas were fine, except the designer did not create a way for all the material from all the hollowed out areas to escape, which you noted, except the base. Looks like they forgot to finish. All that it needs is the base remodelled, and a way for the powder to escape from the hollow areas. I am sure recreating the base should be no problem for him. The new escape tunnel might be painful for the model, lol.

Keith


Have any questions regarding Blender, and need fast answers, you are always welcome at the IRC Server Freenode, channel #blender. As a bonus, several there have experience in modelling for 3D prints.

Keith
Re: Repair needed on Character model for 3D Printing [message #57467 is a reply to message #57401 ] Mon, 26 November 2012 04:08 UTC Go to previous messageGo to next message
avatar atomicfx  is currently offline atomicfx
Messages: 8
Registered: November 2012
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Junior Member
I big Thank You to everybody who has tried to help me with solving my character model issue. The model has been repaired by griffith76. Thanks again buddy!

Regards,
David
Re: Repair needed on Character model for 3D Printing [message #57507 is a reply to message #57467 ] Mon, 26 November 2012 18:45 UTC Go to previous message
avatar Fredd  is currently offline Fredd
Messages: 350
Registered: November 2011
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Senior Member
David, out of morbid curiosity what is the finished models price when it was hollowed out. I am guessing around $500.

Keith


Have any questions regarding Blender, and need fast answers, you are always welcome at the IRC Server Freenode, channel #blender. As a bonus, several there have experience in modelling for 3D prints.

Keith

 
   
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