[Red71gmc]

I'm confused and have done this for years. Etching gives you a bite onto any metal as said.
Sandblasting is the mother of all etching. I believe it's the rough surface after sandblasting that gives this.
I would like to hear from those that have done both. I have and sandblasting is a mechanical way or creating a etch. If I'm all wet then I would like to know why? I will always look at different points of view.