I wonder what material I should choose for color printing a solid sphere of 5 cm diameter. My observations:[list type=square][*]Full color plastics: Yes. [*]Full color sandstone: No, because the sphere would fail the sandcastle test.[/list] Am I right?
The various eggs and planets in the Miniatures/Figurines category of the shops would seem to disagree
This thing prints successfully in color sandstone. However it has thin walls a bit thicker than minimum (as I recall) so it can be a teeny bit warped as if it was placed on its side before it was completely hardened or something. I think as you made a solid sphere or with thicker walls it would remain more spherical. Overall size may also be a factor. If the color plastic were offered for everyone I'd probably stick with that, although the colors are a bit better with the sandstone.
Thanks for the example. Yes, I want to print solid. In the meantime I was made aware that @chronopsis2 has already done what I want to do: A sphere with a 360° panorama on it. It's product number Z69XY6HCN in the shop: Villa Doria Pamphili panorama sphere (2") One could do fun things with that, for example create a stand that allows spinning the sphere, like a globe. OTOH what could be a problem when offering models for sale: "When a Full Color Plastic product is first opened, it may have a strong plasticy smell [...]" (source: material info)
It sounds like you are looking to create a Scandy Sphere. You should check out Scandy.co. They 3D print 360° images in full color just like you are looking for.