I try to produce such handmade carved easter eggs: http://weburbanist.com/2010/05/22/insanely-intricate-eggshell-art-by-franc-grom/. I'm not able to sketch directly on the egg surface. I'm only beginner in 3D, so I have 2 questions:
How could I put and arrange such pattern on the surface?
How could I produce "holes/breakthroughs" in the object geometry for 3D-printing (using the 3D-printed pattern as template to transfer the pattern to the "real" egg surface using a pencil)?
Thanks for your help.
I unwrapped the mesh in "sphere projection". Then I applied this texture http://www.123rf.com/photo_35224838_vector-damask-seamless-pattern-background-elegant-luxury-texture-for-wallpapers-backgrounds-and-page.html two times onto the uv-map in an external image-processing-software. Then I applied this texture to the object in blender, which distorts the texture to the north and south pole. I don't know, how to align e.g. this pattern http://www.derwesten.de/img/incoming/origs7781524/6226267404-w552-h740-bF3F3F3-st/55449025-300x402.jpg or http://img.weburbanist.com/wp-content/uploads/2010/05/franc-grom-eggshell-art-1.jpg (no distortion to the poles).
My idea to produce the "breakthroughs" for 3D printing is to "bake" the pattern/texture onto an uv-map based on stripes or two circles. Then export this uv-map as image, import in vector-processing-software (e.g. Inkscape) and create bezier curves/paths and export this vector format. Then import the vector format in blender and bend the curves/paths along the given egg-shape-path, that a new egg object is created. Then delete the "breakthroughs" or apply this new object to the given egg object using boolean.
Question to the blender experts: How to bend the imported curves/paths along a path and apply the boolean? I hope, that someone could give me an example.