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I'm pulling my hair out with this. I have tried different ratios, different types of paper, pressing with hands, pressing with clamps, soaking for different lengths of time, etc. and the result is always the same. The toner has patches where it flakes off and also once the paper has been removed the toner turns white and the copper gets a white deposit on it that I can't remove unless I scratch it, but then I risk damaging the very fragile toner.