“You coat the paper in Alum, which is a mordant you use so that the paint will stick. Then you place the paper on top of the bath and peel it off, and you have your perfect impression of the painting," says Rachel.
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“You coat the paper in Alum, which is a mordant you use so that the paint will stick. Then you place the paper on top of the bath and peel it off, and you have your perfect impression of the painting," says Rachel.