Thermochromic Pigment: Color-Changing Black Ink - negromicon.com

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Thermochromic Pigment: Color-Changing Black Ink

HomeMust Be Useful for SomethingThermochromic Pigment: Color-Changing Black Ink

RedGrave Must Be Useful for Something April 27, 2019 Leave a reply

Must be useful for something…

https://www.adafruit.com/product/4134

Originally posted in the Bizarre Magick Facebook group.

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