Define depth in a usable way
Replace descriptions such as “very deep” with a drawing requirement when depth matters. Establish the reference surface and whether the requirement applies to a minimum, maximum or nominal recess. Clarify how it will be measured. A dark photograph cannot demonstrate depth, and a readable character does not prove compliance with a dimensional callout.
Consider nearby geometry
An engraving may be placed near a thin wall, sealing surface, edge or loaded feature. The part designer should identify restricted locations and permitted material removal. Provide a drawing that shows the marking area in context. A cropped logo file alone gives no indication of the component features that must be protected.
Separate sample development from recurring work
A new engraving may need an initial sample and a defined inspection plan. Ask the quote to distinguish setup, processing and measurement. Once an acceptable result is established, retain the artwork, part revision and acceptance method for repeat orders. A later change to character size, location or depth should trigger a review of the previous quote and setup.