I've read the archives and googled. I saw several references to
shelf life as a negative of AP. Does anyone know what the shelf life
is? I am assuming that the powder/crystals is indefinite but the
solution is not. I know AP is not the prefered etchant around here
but have some and will probably use it.
Phil
shelf life as a negative of AP. Does anyone know what the shelf life
is? I am assuming that the powder/crystals is indefinite but the
solution is not. I know AP is not the prefered etchant around here
but have some and will probably use it.
Phil