diff --git a/src/kiri-dev/fdm/Creality.CR-30 b/src/kiri-dev/fdm/Creality.CR-30
index d926839d..8883bf10 100644
--- a/src/kiri-dev/fdm/Creality.CR-30
+++ b/src/kiri-dev/fdm/Creality.CR-30
@@ -80,7 +80,7 @@
         "sliceSupportExtra": 0,
         "sliceSupportAngle": 1,
         "sliceSupportNozzle": 0,
-        "sliceSolidMinArea": 15,
+        "sliceSolidMinArea": 5,
         "sliceSolidLayers": 3,
         "sliceBottomLayers": 3,
         "sliceTopLayers": 3,
@@ -135,7 +135,7 @@
         "sliceSupportExtra": 0,
         "sliceSupportAngle": 1,
         "sliceSupportNozzle": 0,
-        "sliceSolidMinArea": 15,
+        "sliceSolidMinArea": 5,
         "sliceSolidLayers": 3,
         "sliceBottomLayers": 3,
         "sliceTopLayers": 3,
diff --git a/src/kiri/function.js b/src/kiri/function.js
index 6f41d37a..b11e736c 100644
--- a/src/kiri/function.js
+++ b/src/kiri/function.js
@@ -52,9 +52,11 @@ function prepareSlices(callback, scale = 1, offset = 0) {
     view.set_slice();
     conf.save();
 
+    // allow client.js to generate support widgets
     event.emit('slice.begin', settings.mode);
 
-    const slicing = widgets
+    // refresh widget list because slice.begin may generate supports
+    const slicing = api.widgets.all()
         .slice()
         .filter(w => !w.track.ignore && !w.meta.disabled);
     const totalv = slicing.map(w => w.getVertices().count).reduce((a,v) => a + v);