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Editing shells [message #49719] Tue, 12 June 2012 05:05 UTC Go to next message
avatar nickmich  is currently offline nickmich
Messages: 2
Registered: May 2012
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Junior Member
Hi all,
I am new to the 3D printing world but have designed rapid prototyped parts before. I am trying to have one of my models 3d printed through shapeways but they are saying it can't be done as their are too many shells. I am new to this terminology, and 1. don't fully understand what shells in this context are and 2. don't know how to fix it. Is anyone able to help in this department?

Kind Regards,
Nick
Re: Editing shells [message #49721 is a reply to message #49719 ] Tue, 12 June 2012 06:24 UTC Go to previous messageGo to next message
avatar stop4stuff  is currently offline stop4stuff
Messages: 3119
Registered: June 2010
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Shapie Expert
Hi Nick,

The term shells means the individual watertight meshes that make up your model. As for why the model was rejected for 'too many shells' could be down to a couple of reasons;
1. Checker error. When you order your model for the first time, your model is manually checked by an operator, sometimes they ake mistakes as happened with a chain maille piece I once ordered - the solution to this is to ask for Shapeways to check again with your reasons as to why you think it is a mistake on their part.
2. The shells making up your model do not quite overlap and some shells are floating free of the main model shell. The solution to this is to ensure that you have no free floating shells in your software and that your model is one complete shell, which can be done by using NetFabb Cloud Service

Any-which-way, if you've not already got it, I also recommend NetFabb Studio Basic for error checking etc.

Paul
Re: Editing shells [message #49723 is a reply to message #49719 ] Tue, 12 June 2012 06:37 UTC Go to previous messageGo to next message
avatar nickmich  is currently offline nickmich
Messages: 2
Registered: May 2012
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Junior Member
If it is about the model being 'watertight' It isn't meant to be, as it is a model railways cattle wagon that was made from planks of timber. see attached file.

I have tried editing it in netfabb studio basic, but the number of shells didn't change. So it is currently being uploaded to the cloud service.

Thanks for you help, your explanation on what the term shell is really helped me.

Kind Regards,
Nick Michalak

Re: Editing shells [message #49725 is a reply to message #49723 ] Tue, 12 June 2012 06:45 UTC Go to previous message
avatar stop4stuff  is currently offline stop4stuff
Messages: 3119
Registered: June 2010
Go to my shop
Shapie Expert
The model can be whatever it needs to be, but the shells making up the model must be watertight - i.e. the planks making up the sides of the truck must have no holes from the outside surface to the inside surface of the shell that makes the plank.


 
   
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