Re: resinotype question

[Alberto Novo <alt_list@albertonovo.it>]

> Do you happen to know which pigments might not
> be compatible with this process?
Every earth and oxides, lampblack, etc. are very good pigments, though some 
of them may be too weak (see raw umbra). I prefer to not use organics, 
because they must be heated up to about 120°C and you don't know if they 
decompose or not, so you need to be teste each one to see if it fades or 
changes its colour.
I HIGLY DO NOT recommend trying to heat Prussian Blue (ferric ferrocyanide). 
The light acidity of the rosin and the heat decompose it developing 
cyanhydric acid. 
Alberto