Why did Armour Etch not work well on a solid etched area?
We consider anything larger than 1″x1″ too large for solid etching. Armour Etch is NOT made to etch solid large areas of glass. It is stated in all of our instructions and books. It is impossible to evenly coat a piece of glass all at the same time. Therefore, wherever you apply the Armour Etch to first will start to etch immediately upon contact. The brush will leave brush strokes and the trail of where you etch first, then second, etc, will show up in the end results. Also, when glass is manufactured sometimes stains occur due to the type of process used to make the glass. We do not see these stains because we are looking through them. When you etch the glass, these stains become visible as Armour Etch is only creating a surface etch, which is not deep enough to go past this stain. In some cases, certain window cleaner can create a stain on the glass. Especially the cleaners that advertise a reduction in fingerprints. These cleaners are actually putting a coating onto the glass, thus
