Re: VanDyke developer
True, that's why I am surprised. Development is absolutely needed for kallitype, not for VDB which is a very simple POP process.Borax development is for Kallitypes, no?
True again. A print I have seen is more black than the characteristic VanDyke brown.Maybe the "developer" will post-amplify the reaction, forming larger nano-particles (or coagulate the former ones), therefore change the characteristic color of the print? Does your friend experience any perceptible difference when "developing" prints?