I tried to make a chemically colored Spring Festival greeting card a few days ago.
A few days ago, I tried to make a chemically colored Spring Festival greeting card. I will also give it to you here:
the words written in potassium thiocyanate solution (colorless) are used here. After drying, they are sprayed with ferric trichloride solution to show red characters (ferric thiocyanate).
I find that the handwriting will easily burn out after spraying too much solution, so it's best to stay away from the spray can a little bit and not spray too much. The words displayed will have a sense of mystery:
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in short, happy Spring Festival ~