I wonder if the paint used as exposed layer will see its “printability” property decay with tile. I have experimented pinhole exposures length up to 1 day with

I wonder if the paint used as exposed layer will see its “printability” property decay with tile. I have experimented pinhole exposures length up to 1 day with and photographic films and the light capture decay drastically with time: what’s happening in the beginning of your scene is much more present than what was present in the end.