Is there any way to make default k3d font smaller on Mac?
You need to look for the gtkrc file somewhere below the installation location of the K-3D bundle. On windows this is etc/gtk-2.0/gtkrc relative to the install directory.
Then, according to https://discussions.apple.com/thread/1113853?start=0&tstart=0 you can add something like
gtk-font-name = "Handwriting - Dakota 16"
inside the style that is defined, where the 16 is the font size.
Sorry, I don't have access to OS X so I can't check this method.
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