Deep engraving creates a tactile, dimensional metal card surface — a mark you feel under a fingertip, not just see. Recessed logos, sculpted patterns, and colour-fill zones are planned beside the RF stack, body thickness, and handling requirements, because depth is a physical budget on a card this thin.
Recessed brass, gunmetal relief, shallow copper lines, and a finish-variation set — how depth reads across the range.
The recess is worked into a body that runs 0.3 mm to 0.8 mm, so deep, tactile marks push the build toward the thicker end of the range and are always agreed against the RF stack behind the face. Sharp interior corners and fine islands are the first details to fail — patterns are simplified at proof stage, not on the machine.
Approve depth, edge sharpness, color-fill tolerance, and handling feel on a physical sample.
The practical route is selected from the system, audience, and handling context before the final metal finish and mark treatment are approved.
Metal card production should confirm body construction, finish, chip route, data handling, marking layers, and approval samples in one brief.
Deep enough to feel clearly under a fingertip. The working recess is agreed against the 0.3–0.8 mm body and the RF stack behind it, which is why heavily sculpted patterns steer toward thicker builds.
Yes — the recess is what makes enamel-style fill possible, acting as a boundary that holds the colour. Fill tolerance and edge sharpness are approved on the physical sample.
It is the one marking decision that physically approaches the RF layers, so recess depth, position, and body thickness are reviewed together before a production sample is approved.