Hi all,

I'm in love with the appearance of gum prints and decided to start with the process from 13x18cm (app. 5x7") negatives.

I have following stuff waiting to be used:
- gum arabic (bulk);
- potassium dichromate (bulk);
- various color samples to play with;
+ quality watercolor paper, brushes, roller, contactprinting frame (in the make).

I've been reading a lot on the process lately and I modestly can say that I understand the workflow.
Some sources say that you should coat the paper a first time with a gelatine layer, others don't mention it. I'm a bit confused on that part.
My question: is it (really) necessary to precoat the paper?
Any further tips are welcome.

All I have to do now, is wait for the sun to gain strenght!