diff --git a/src/kiri-mode/cam/ops.js b/src/kiri-mode/cam/ops.js
index 6c871f4e..03364bbe 100644
--- a/src/kiri-mode/cam/ops.js
+++ b/src/kiri-mode/cam/ops.js
@@ -242,7 +242,7 @@
 
                 // inset offset array by 1/2 diameter then by tool overlap %
                 offset = POLY.offset(nest, [-(toolDiam / 2 + roughLeave), -toolDiam * op.step], {
-                    minArea: 0,
+                    minArea: 0.1,
                     z: slice.z,
                     count: 999,
                     flat: true,