Hollowing out a blender model for 3D printing

Support Modeling
1

Hello,

So I have modeled a mobius ring shape and plan to 3D print it as a bracelet off shapeways, however the cost is very high due to the volume. I want to hollow out the insides and give the walls a thickness of 0.8mm. I have been searching everywhere for a way to do this, but I have not been able to find an answer. I would love to be able to do this to reduce costs for all future 3D prints.

Also, any tips to help reduce cost during 3D printing would be helpful

thanks!

2

Solidify Modifier http://wiki.blender.org/index.php/Doc:2.6/Manual/Modifiers/Generate/Solidify

EDIT:
Moved thread from Blender Discussion forum to Support / Modeling forum

3

If you hollow something out there needs to be a hole for the support material to drain from.

Steve S