Smoothing a mesh for 3D printing in Blender

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A random video to watch if this isn't your thing, or if it is: https://www.youtube.com/watch?v=hMRMKWxbULs

To help out another member of the Google Groups I have put together this video: https://groups.google.com/forum/#!topic/3dprintertipstricksreviews/JXiLwDoO7hA

He asked: "Any tips for increasing facets on an existing stl? For example, i'd like to smooth the threads on something like this. The trouble I have is all the edges end up smooth too."

Blender's Subdivision Surface modifier has control over edges in edit mode using the Crease setting on an edge. Here's how to do it

If you have any questions about 3D printing or preparing your models for 3D printing, be sure to ask.

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All music by Kevin MacLeod (incompetech.com)
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