Christian, I believe that in VRML format everything is assumed to be in some
units (meters?) by the printing software. I'm not sure about X3D, but it's
probably the same. So I'd say yes, there will be a relation betwen angstroms
in the model and the printed size.
We discussed the problem time ago with VRML export, and Bob introduced
the scaling factor command. I imagine it just multiplies all measures by the
factor before exporting.
You will probably still have to test.
If I remember correctly, the Shapeways service asks if your model is in
meters or inches, so it may apply some correction. Other printing services do
have the option to use a scaling factor as part of the upload process.
See http://wiki.jmol.org/index.php/3D_printing
> I found it now also in the Jmol documentation. In your experience, does this
> scaling number
> depend on the size of the model, i.e. is there some relation between size of
> the model in
> Angstroms and the printed size in mm?
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