Just got my first in a series of color panorama prints, mapped onto spheres and output to full color sandstone. I was disappointed to see how dark the image ended up printing; much darker than the jpeg source. And after seeing how strong the material is, it made me wonder why there is always a 3mm thickness limit - for a model like this, it seems it could be thinner..? Oh well. I hope my next 4 models, which are in production, don't turn out as dark, as I'll be exhibiting them with the original photographic sources. The sphere is a little over 2" / 5.5cm high. In future models I've only made one hole, at the bottom.