Thanks again guys, really appreciate your thinking along.
@KlausK ; I don't know what they will use as material, nor size, but I expect it to be robust stuff (outside, so vandalism-proof) and not too big, maybe 50cm across. It will be a scene of say 10x10 terrain with some dents and square peatholes, and some working characters digging peat, for instance.
I tried making one of my people models (consisting of several parts and layers) into a watertight printable object, but even that isn't easy. ZBrush does a pretty good job at making all the parts into one mesh by dynamesh, but lots of holes still appear. Closing them still gives 'closed holes', like in an overhanging tunic. Remeshing in ZBrush will just give an untextured model, and this project needs color preferably.
That also answers your question
@gao_jian11 ; overhangs are important for the characters, not so for the terrain. For that I can indeed use the TG microexporter, or through a depth mask and ortho render. Thanks for your video, interesting to see your workflow.
So I wonder how these guys make their scanned treetrunks so nicely closed
and colored.... they mostly look good for printing as well. Also, if I were to make separate models for characters and terrain, they will have to be merged for a one go print, I guess. More digging to do....