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Which CAD system?? [message #43395] Fri, 03 February 2012 17:52 UTC Go to next message
avatar chrisleis  is currently offline chrisleis
Messages: 2
Registered: February 2012
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I created a (complicated) shape using 123DCatch (3D shapes from a set of fotos). The shape is "just" a surface so far, a mesh with 0 thickness. I do not want to simply close it and print it as a full not hollow part, because that costs a lot more.

To be able to 3D print it, I d like to add thickness to the mesh by extruding it for example. And then I have to put some holes (cylinders) into it. Thats basically it.

Can anybody recommend a (free?) CAD system for these tasks? I tried several already, but no real success so far.

Many thanks!

Attached is a screenshot of the 3D mesh (a hand).

UPDATE: I managed to extrude very nicely with MESHMIXER now. But cannot put cylindrical holes through the extruded surface...

index.php?t=getfile&id=14225&private=0

  • Attachment: fist.JPG
    (Size: 25.03KB, Downloaded 264 time(s))

[Updated on: Fri, 03 February 2012 18:32 UTC]

Re: Which CAD system?? [message #43457 is a reply to message #43395 ] Sat, 04 February 2012 20:44 UTC Go to previous messageGo to next message
avatar meshmixer  is currently offline meshmixer
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Registered: February 2010
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Hi chrisleis, you can create holes through the extruded surface using two ways in meshmixer:

1) select an area on either side and use the 'Bridge/Handle' tool. This will join the two selected areas with a tube, and remove the selected areas. If you want a crisper edge, after you accept the bridge, immediately (ie before clearing the selection) run the 'Transform' tool and just accept. This will insert a sharp edge. Also to create a smoother selection boundary you can use the 'Smooth Boundary' tool. And you can use the 'Smooth' tool after the bridge to smooth out the hole interior.

2) The most recent version of meshmixer07 now supports Booleans operations, so to create a hole you can import a cylinder and subtract it. See help here:

http://meshmixer.com/forum/index.php?topic=468.0

http://meshmixer.com/forum/index.php?topic=480.0
Re: Which CAD system?? [message #43459 is a reply to message #43457 ] Sat, 04 February 2012 21:33 UTC Go to previous message
avatar chrisleis  is currently offline chrisleis
Messages: 2
Registered: February 2012
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Junior Member
Thank you for your help!!

On the surface I have, I would like to create holes which run exactly parallel to the surface normal. (Subtract a cylinder with an axis parallel to the surface normal). I have difficulties defining/doing that in meshmixer and Blender.

[Updated on: Sat, 04 February 2012 21:34 UTC]


 
   
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