I’ve been having “blotchy” etching results. Not sure why I can’t find an answer anywhere. Here’s what I’ve been doing: o1 tool steel cleaning area with laquer thinner then alcohol Using tape or nail polish or vinyl stickers Salt water solution Felt or cotton or qtips 12v battery charger My problem is I’m getting blotchy areas where there is a clear distinction between how the etching worked in one area vs another. I have no idea why this is happening. Any help would be really appreciated. Below is one of my first knives I used as a guinea pig around the shop but the results of my etching are similar to what you can distinctly see here. My main etching going forward will be done with vinyl stickers I’m having made up.