re: Good outdoor surface for painting an analemmatic dial
I am helping a local school make a "human" sundial, i.e. an analemmatic one,
and the school is enthusiastic about the idea. (My daughter is a pupil at that
school.) I have been liaising with the art teacher, and the suggestion is that
one or more students studying art would mark out the layout of the dial on the
tarmac/asphalt ground, and then paint on it. So both a scientific and
artistic project.
The difficulty we face is that the tarmac/asphalt surface is quite grainy and
not good to paint on. Do you have any advice on how to get a good smooth
outdoor surface to paint on (and we want the surface to retain the paint) ?
Any advice would be appreciated.
Thanks
Gerard
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