This etching solution, while made with common chemicals ... Dry the board with a paper towel. At this point, the solution is used-up because of all the copper that has been dissolved within ...

Except, of course, for E-paper. These displays have high contrast even in sunlight and they hold their image even with no power. When [smbakeryt] was looking at his daughter’s Etch-a-Sketch ...

This groundbreaking technique, also referred to as MacEtch or MACE, provides ultra-high anisotropy etching that’s free from damage. It is an innovative approach that effectively addresses the ...