Paint washing off

Watercolour Marbling
ScottC
Posts: 10
Joined: Fri May 19, 2017 2:16 pm

Paint washing off

Postby ScottC » Thu May 25, 2017 3:17 pm

Hello,

I'm trying to lean the process, and my first attempt looked good... Until it all washed off in a sheet, leaving almost completely clean paper.

I used alum at 10% w/v (10g in 100mL). I wiped it on and left it until it was damp but not dry. Should it be drier perhaps? My alum powder, although dry, is a few years old. Does it go off?

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