diff --git a/public/assets/models/orange_half.glb b/public/assets/models/orange_half.glb
new file mode 100644
index 0000000..3336c24
Binary files /dev/null and b/public/assets/models/orange_half.glb differ
diff --git a/src/sim/grating.ts b/src/sim/grating.ts
index fa1dd53..f3fe39f 100644
--- a/src/sim/grating.ts
+++ b/src/sim/grating.ts
@@ -272,7 +272,9 @@ export function grateStroke(
       ? clamp01((KNUCKLE_SAFE_BLOCK - s.blockMass) / KNUCKLE_SAFE_BLOCK)
       : 0;
   if (proximity > 0) {
-    const risk = p * (0.4 + 0.6 * len) * proximity;
+    // Below ~0.4 pressure you're deliberately careful — no roll at all.
+    // Easing off must be a real defense, not a smaller lottery ticket.
+    const risk = Math.max(0, p - 0.4) * 1.6 * (0.4 + 0.6 * len) * proximity;
     if (rand() < risk * KNUCKLE_GAIN) {
       out.knuckle = true;
       s.knuckleHits++;