Engraving is unforgiving in a way printing is not. There are no tones, no colour to carry a weak shape, and no second pass to fix a thin line. A design that would merely look untidy on paper becomes an unreadable item in metal, so every judgement has to be made before the product is live.
Build it
Design in one colour
Build the artwork as shapes rather than tones. If it does not read as a silhouette, it will not read engraved.
Test the stroke weight
Look at the thinnest line in your design and ask whether it survives being cut. Elegant display fonts are where this usually fails.
Cap the text hard
Set Max length low. An engraved area is small, and a long value either shrinks past legibility or overflows.
Restrict the characters
Set Allowed characters to Letters only unless digits are genuinely part of the product. Emoji have no engraved form at all.
Order one
Buy the product yourself before listing it. This is the product category where a proof on screen tells you the least.
What changes from a print
Photographs and engraving
A photograph cannot be engraved as a photograph. It has to become line art or a high-contrast silhouette first, and that conversion is a design decision rather than something a setting does for you.
If your product is built around customer photographs, engraving is the wrong process for it. Choose a printed product instead, or restrict the personalization to text.
Common questions
How short should the text be?
Shorter than on a printed version of the same product. Set the max length to what the area can carry at a size you can read at arm's length.
Can I offer a font choice?
Only from a list you have tested engraved. A font picker is where thin strokes reach production without anyone looking.
Will a photo work?
Not directly. It has to become line art first, and that is a design step rather than a setting.
The proof looks fine and the item does not.
That is the normal gap for this process. The proof shows shapes at screen resolution; the machine cuts at the size of the real item.
Should I sell engraving and printing as one product?
No. They need different artwork and different rules, so they are two products even when they look like one.
Next
Read a monogram for the field rules in more detail, or choose and load fonts before you offer any font choice on an engraved product.