电化学铝合金蚀刻
30分钟刻蚀
- 100g硫酸铜 （156.25g五水合硫酸铜），100g食盐
Carefully place equal amounts of copper sulfate (e.g.100g*) and cooking salt (e.g. 100g*) into a bucket or straight into a small etching tray. It is useful but not essential to premix the dry powders before diluting with water.
- 500ml 热水，搅拌
Add 500ml* of hot water and stir all the ingredients together with a wooden stick or a stiff brush. The solution turns into a green sludge. - 再加500ml到1L温水直到完全溶解
Add another 500ml to 1liter* of warm water whilst stirring continuously. Most of the crystals should dissolve within 5 to 10 minutes of mixing, producing a dark green liquid.