The prints you see in the picture are all mostly done with the following settings:
- Clear PLA filament (e.g.this one)
- Glue-stick needed on the bed surface to catch the fine detail (the clear PLA doesn't seem to stick as well)
- 30°C bed, no fan (heated bed doesn't seem to make any difference and cooling reduced adhesion)
- Recommended head temp for filament (200°C in my case)
- 0.4mm nozzle, 50mm/s travel, and 0.25mm layers
I haven't managed to find any settings that produce a really nice dense print that appears more 'glassy' though.
As for slicer, I've been using Ultimaker Cura and found the following:
- It usually complains about non-manifold models, but still prints ok (unless you see the 'footprint' go crazy sized).
- It doesn't place it exactly on the surface, usually slightly below so some of the fine edge feathering gets missed. Turning off 'auto drop to bed' (still does it when first added) and manually lift it a little bit. You can see the intersecting parts as they are darker.