diff --git a/apps/web/src/components/viewers/CardMesh.tsx b/apps/web/src/components/viewers/CardMesh.tsx
index ef00228..75f1184 100644
--- a/apps/web/src/components/viewers/CardMesh.tsx
+++ b/apps/web/src/components/viewers/CardMesh.tsx
@@ -22,8 +22,8 @@ import {
 const CARD_LENGTH = 2;
 /** Corner radius as a fraction of the shorter card edge. */
 const CORNER_RADIUS = 0.05;
-/** Thickness of the card. */
-const CARD_THICKNESS = 0.06;
+/** Thickness of the card, as a fraction of its length (real cards are ~0.3%). */
+const CARD_THICKNESS = 0.01;
 
 // A 1x1 transparent placeholder so `useTexture` always receives a valid URL.
 // Without it, the face/back hooks would be called conditionally, which breaks