Hi Carl, You wrote:
>If the cylinder azimuth sundial was printed on normal paper and then >laminated that would give a durable dial. Thanks for the suggestion. Alas, in my tests, an azimuth cylinder sundial with a laminated paper dial face does not have a good light/shadow boundary. I have tried laminations and overlays of different thicknesses. It seems that even a very thin layer of any transparent surface seriously deteriorates the terminator. A vinyl dial face, as printed by a commercial sign shop, seemed like a great way to create a durable azimuth cylinder sundial, but the terminator is weak. Best wishes, Mac --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
