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I wonder if it's feasible to make diy Thermal paper using lemon juice, like the old "invisible ink experiment"
by gzalo 2y ago
I wonder if it's feasible to make diy Thermal paper using lemon juice, like the old "invisible ink experiment"
- desdenova 2y agoShould be easy enough to test if you have a thermal printer. Just spread lemon juice on paper, wait for it to dry, and try printing on it.