Hi all, me again ...
I discovered that my colors dry like rubber. I use Marks recipe for a slow dry medium exactly, but without the oil of cloves. After a drying time of two weeks my latest painting is completely dry on the surface and when you rub your fingers over it it almost squeaks. Apart from that it has some shiny parts and some that are dull, both dry.
Actually I was expecting it to be dull all over like I saw it on Marks video on varnishing (don't worry, not yet).
Is this some kind of problem? Will it disappear? Why is this happening? I read about that this might prevent a painting from drying.
Thanks again for your help.