The edge is where a metal card is judged in the hand. Edge finishing controls how a 0.3–0.8 mm body feels, reflects light, and survives handling — corners, polish, dark layers, slots, and cut-through details are approved together with the final antenna-safe layout.
Three edge profiles side by side, a deburred steel edge, a dark-and-warm pair, and a corner radius — the card in the hand.
Bodies run 0.3 mm to 0.8 mm; edges are deburred and finished, corners follow the CR80 radius unless a custom profile is agreed, and a chamfer or dark edge layer changes both the look and the feel. Slots and holes join the edge conversation early, because every opening passes through the RF construction.
Approve physical thickness, edge feel, custom cut tolerance, and reader behavior in the final profile.
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.
Between 0.3 mm and 0.8 mm depending on construction — enough mass to feel substantial while staying wallet- and reader-practical. The edge treatment decides how that thickness reads in the hand.
Deburred and finished edges as standard, CR80 corner radius or an agreed custom profile, chamfer control, and a dark edge layer where the build calls for it. Edge feel is approved on the physical sample.
Yes — thickness, slots, holes, and custom outlines are RF decisions as much as cosmetic ones. Every cut is reviewed against the antenna route before a die line is released.