diff --git a/src/kiri-mode/cam/export.js b/src/kiri-mode/cam/export.js
index ecc9fd51..45a62c31 100644
--- a/src/kiri-mode/cam/export.js
+++ b/src/kiri-mode/cam/export.js
@@ -211,6 +211,14 @@ CAM.export = function(print, online) {
         if (points === 0) {
             pos.x = pos.y = pos.z = 0;
             points++;
+            if (newpos.z > pos.z)
+            moveTo({
+                // speed: Infinity,
+                tool: out.tool,
+                point: { x: newpos.x, y: newpos.y, z: newpos.z, a: newpos.a }
+            }, {
+                dx: 0, dy: 0, dz: 1, time: 0
+            });
             moveTo({
                 // speed: Infinity,
                 tool: out.tool,
@@ -218,6 +226,7 @@ CAM.export = function(print, online) {
             }, {
                 dx: 1, dy: 1, dz: 0, time: 0
             });
+            if (newpos.z < pos.z)
             moveTo({
                 // speed: Infinity,
                 tool: out.tool,