Hello wonderful Timkercad Community!
My problem is that the "skin" of the top layer of objects that I design disappears after the object files are sliced. The objects appear fine both in Tinkercad and even look fine in the two 3D printer applications I have tried which are Cura and Moira. I have tried both STL and OBJ files. In all cases the object files import to the slicing software clean with no perceptable problems. However, each time I slice the object, the skin on top is gone revealing the honey-comb of the inner structure. The skin on the sides of the object slice with out a Whaproblem.
What I've tried:
I read in a Tinkercad forum that the grid granularity setting will dictate the thickness of the surface and so I experimented with a grid setting of 2mm.
I've tried two slicing software apps - Moira and Cura - same result
I've tried exporting to OBJ and STL
I've tested basic geometry objects from the menu with the same result.