diff --git a/src/kiri-mode/cam/slice.js b/src/kiri-mode/cam/slice.js
index 4d81779f..c49de96f 100644
--- a/src/kiri-mode/cam/slice.js
+++ b/src/kiri-mode/cam/slice.js
@@ -229,6 +229,7 @@ CAM.slice = function(settings, widget, onupdate, ondone) {
         op.slice((progress, message) => {
             onupdate((opSum + (progress * weight)) / opTot, message || op.type());
         });
+        tracker.rotation = isIndexed ? axisRotation : 0;
         // setup new state when indexing the workspace
         if (true && op.op.type === "index") {
             let points = base.verticesToPoints(widget.getGeoVertices(true, true));
@@ -241,7 +242,6 @@ CAM.slice = function(settings, widget, onupdate, ondone) {
                 // console.log('reshadow', progress.round(3));
             });
         }
-        tracker.rotation = isIndexed ? axisRotation : 0;
         camOps.push(op);
         opSum += weight;
     }
diff --git a/src/kiri-mode/cam/slicer.js b/src/kiri-mode/cam/slicer.js
index a1c4517b..f939f6d9 100644
--- a/src/kiri-mode/cam/slicer.js
+++ b/src/kiri-mode/cam/slicer.js
@@ -394,7 +394,8 @@ class Slicer {
         }
         // filter duplicate values
         array = array.map(v => v.round(5)).filter((e,i,a) => i < 1 || a[i-1] !== a[i]);
-        return array.map(v => Math.abs(parseFloat(v.toFixed(5))));
+        // return array.map(v => Math.abs(parseFloat(v.toFixed(5))));
+        return array.map(v => parseFloat(v.toFixed(5)));
     }
 }