Physical size of STL and DXF objects created by PhotoToMesh
(This page shows V3 dialogs. V4 dialogs are almost identical.)
Neither STL nor DXF have inherent units. They are pure numbers, they aren't mm or inches or cm. The units depend on the CNC machine or 3D printer which you use. Of course you can set the numeric sizes in the main dialog:
The base height and mesh height are both in the Z direction and are defined like this:
The sum of the two heights is the maximum thickness of the object, where the "highest mesh area" is.
Even if you invert the mesh the sum is still the maximum thickness:
For cylinders the height and diameter is specified like this:
And the Wall Thickness and Mesh Height are defined like this:
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