Home » Community » 3D modeler needed » How to create hollow 3d models from 123d Catch
Search Search  
Show: Today's Messages    Show Polls    Message Navigator
How to create hollow 3d models from 123d Catch [message #76498] Thu, 10 October 2013 15:55 UTC Go to next message
avatar TerraCottaLu  is currently offline TerraCottaLu
Messages: 6
Registered: May 2012
Go to all my models
Junior Member
Hello I am an art teacher in New York City and I need some help with an issue getting 3d scans ready to print on shapeways:

About a year ago I uploaded a 3d scan of an original sculpture bust and ordered a ceramic "miniature" of it from Shapeways. I was very pleased with the result! Recently I had a similar bust "rejected" with the message that the model needs to be hollow. My first ceramic print was solid, so I am guessing this is a new requirement? I would also like to print in plastics and see that hollowing out models is a potentially huge cost-saver.

So, I am seeking help on "hollowing out" 3d models of complicated sculptural scans. Is there someone (or a web tutorial?) that can walk me through this process in Rhino3D or Blender, or some other software? It is proving to be more difficult than I expected, but since I have dozens of students (and dozens of personal projects) which I want to start uploading to Shapeways and printing, I really want to get some guidance on this process instead of spending hours figuring it our for myself.

The crux of the problem seems to be that the scans themselves - which I create with AutoCad's 123d Catch - are not formatted in a way that is easy for a computer program to hollow out with automated commands. I have my fingers crossed that someone has experience doing this and can point the way.

Thanks in advance for any help you can give me - screenshot of sample piece attached

Re: How to create hollow 3d models from 123d Catch [message #76501 is a reply to message #76498 ] Thu, 10 October 2013 16:23 UTC Go to previous messageGo to next message
avatar Keymaker  is currently offline Keymaker
Messages: 160
Registered: February 2013
Go to my shop
Senior Member
Shapeways Crew
simple answer: Tutorial for blender

But as always there are more ways how to do it.

If you have other question, feel free to contact me.


The only thing that limits us is our imagination.
Re: How to create hollow 3d models from 123d Catch [message #76526 is a reply to message #76501 ] Thu, 10 October 2013 20:49 UTC Go to previous messageGo to next message
avatar TerraCottaLu  is currently offline TerraCottaLu
Messages: 6
Registered: May 2012
Go to all my models
Junior Member
thank you for your reply - I had in fact found that tutorial but I am not too adept in Blender yet so I could not make it work at first try. Do you know of any methods that work in Rhino by any chance? I am using that program more and searching for answers there....
Re: How to create hollow 3d models from 123d Catch [message #76528 is a reply to message #76526 ] Thu, 10 October 2013 21:00 UTC Go to previous messageGo to next message
avatar mkroeker is currently online mkroeker
Messages: 1708
Registered: June 2012
Go to all my models
Shapie Expert
If you use the "Search" option at the top of the Forum page and give it the keywords "rhino hollowing", it should lead you to
this thread which contains a youtube link to a short tutorial video that advertises a new convenience function in Rhino3D V5, but also demonstrates how one would go about hollowing an object in version 4.
Re: How to create hollow 3d models from 123d Catch [message #76529 is a reply to message #76528 ] Thu, 10 October 2013 21:03 UTC Go to previous messageGo to next message
avatar TerraCottaLu  is currently offline TerraCottaLu
Messages: 6
Registered: May 2012
Go to all my models
Junior Member
thanks, I found that video this morning (it did not work for me because of the complexity of my model - can't just slice open the bottom for some reason) but I will now read that thread and hopefully learn more - much appreciated!

Re: How to create hollow 3d models from 123d Catch [message #76537 is a reply to message #76529 ] Thu, 10 October 2013 22:42 UTC Go to previous messageGo to next message
avatar stonysmith  is currently offline stonysmith
Messages: 1921
Registered: August 2008
Go to my shop
Shapie Expert
moderator
If you have the ability to share the STL model, then there are several helpful folks here that could make it hollow for you.
If for some reason you would rather NOT share the model with the public, then you could PM it to someone, (including yours truly - I'd be glad to take a look)


Patience, Persistance, Politeness - the 3Ps will help us get us to Perfect Printed Products
Re: How to create hollow 3d models from 123d Catch [message #76573 is a reply to message #76537 ] Fri, 11 October 2013 15:23 UTC Go to previous messageGo to next message
avatar TerraCottaLu  is currently offline TerraCottaLu
Messages: 6
Registered: May 2012
Go to all my models
Junior Member
thank you very much! I'd be happy to send you a copy of it as long as we are clear that I retain all ownership - I am relatively new to this space and have had some colleagues get burned on other sites with people re-selling their original designs, so I'm sorry to have to reply to your kind email with such a disclaimer, but I just want to be upfront about it!

all the best,

Luigi

Re: How to create hollow 3d models from 123d Catch [message #76586 is a reply to message #76573 ] Fri, 11 October 2013 18:11 UTC Go to previous messageGo to next message
avatar stonysmith  is currently offline stonysmith
Messages: 1921
Registered: August 2008
Go to my shop
Shapie Expert
moderator
Take a look at my shop.. http://www.shapeways.com/shops/stonysmith
Unless your item is model train related, then it's not going in my shop <GRIN>

I completely understand your reluctance. <raises hand> I won't copy, share, or even retain your model once I take a look.

[Updated on: Fri, 11 October 2013 18:11 UTC]


Patience, Persistance, Politeness - the 3Ps will help us get us to Perfect Printed Products
Re: How to create hollow 3d models from 123d Catch [message #76671 is a reply to message #76529 ] Sun, 13 October 2013 20:20 UTC Go to previous messageGo to next message
avatar simonbrundret  is currently offline simonbrundret
Messages: 1
Registered: April 2011
Go to my shop
Junior Member
If you have Rhino, search for Symvol. It is an add on for Rhino that is free and among other functions it has a very affective a one key press shelling command for meshes.
Re: How to create hollow 3d models from 123d Catch [message #76696 is a reply to message #76671 ] Mon, 14 October 2013 14:08 UTC Go to previous messageGo to next message
avatar stonysmith  is currently offline stonysmith
Messages: 1921
Registered: August 2008
Go to my shop
Shapie Expert
moderator
For anyone following this thread:

@TerraCottaLu had a model that was a item sitting on a base. The item and the base were two separate shells, and using Netfabb Basic to slice open the bottom of the model was only slicing the base, but not the main piece above. So, I ran the model thru cloud.netfabb.com to get it back as a single shell.

Then using Blender, I deleted all the faces from the bottom of the model, and then selected the "Solidify" modifier and set it to 1.0mm

Not counting the time spent by cloud.netfabb.com, the process took all of 2 minutes.


Patience, Persistance, Politeness - the 3Ps will help us get us to Perfect Printed Products
Re: How to create hollow 3d models from 123d Catch [message #76702 is a reply to message #76696 ] Mon, 14 October 2013 15:42 UTC Go to previous message
avatar TerraCottaLu  is currently offline TerraCottaLu
Messages: 6
Registered: May 2012
Go to all my models
Junior Member
Many thanks @stonysmith and everyone else who has been replying here and also to me privately. Although I first ordered from Shapeways about a year ago I have never been active on the forums and it's been a pleasure to see what a great exchange of support and info goes on here. I can't wait to try out the various processes and report back here.

 
   
Previous Topic:3D Modeler for Shoe designs
Next Topic: 3d modeler needed for organic designs

Logo

Hello.

We're sorry to inform you that we no longer support this browser and can't confirm that everything will work as expected. For the best Shapeways experience, please use one of the following browsers:

Click anywhere outside this window to continue.