diff --git a/slice_test.html b/slice_test.html
index b02b71a..e985515 100644
--- a/slice_test.html
+++ b/slice_test.html
@@ -30,7 +30,7 @@ function init () {
 	var scene = createScene();
 
 	var localIp = location.hash.substring(1);
-	doodleBox = new D3D.Box(localIp);
+	//doodleBox = new D3D.Box(localIp);
 
 	var printer = new D3D.Printer().updateConfig(USER_SETTINGS).updateConfig(PRINTER_SETTINGS["ultimaker"]);
 
@@ -69,6 +69,7 @@ function init () {
 		
 		mesh.rotation.x = -Math.PI/2;
 		mesh.scale.x = mesh.scale.y = mesh.scale.z = 1;
+		mesh.position.y = -9.260265119962973e-17;
 		mesh.position.x = 100;
 		mesh.position.z = 100;
 
diff --git a/src/slicer.js b/src/slicer.js
index 3809e28..db89005 100644
--- a/src/slicer.js
+++ b/src/slicer.js
@@ -2,14 +2,6 @@
 *
 * Slicer
 *
-* TODO (optimalisatie)
-* sorteer lijnen op laagste hoogte -> stop loop wanneer hij een lijn zonder intersectie heeft gevonden
-* verwijder lijnen die ooit interactie gehad hebben, maar nu niet meer
-* helft van lijnen toevoegen omdat 4face altijd recht is, en 3face dus te veel data bevat
-* 
-* omliggende lagen -> difference && sum omliggende lijnen
-* voor laag 5 = 5 diff (3 && 4 && 6 && 7))
-*
 ******************************************************/
 
 D3D.Slicer = function () {
@@ -137,8 +129,8 @@ D3D.Slicer.prototype.slice = function (layerHeight, height) {
 
 	//still error in first layer, so remove first layer & last layer
 	//see https://github.com/Doodle3D/Doodle3D-Slicer/issues/1
-	for (var layer = 1; layer < layersIntersections.length-1; layer ++) {
-	//for (var layer = 0; layer < layersIntersections.length; layer ++) {
+	//for (var layer = 1; layer < layersIntersections.length-1; layer ++) {
+	for (var layer = 0; layer < layersIntersections.length; layer ++) {
 		var layerIntersections = layersIntersections[layer];
 		var y = layer * layerHeight;
 
diff --git a/src/slicerworker.js b/src/slicerworker.js
index c233a68..5b885f6 100644
--- a/src/slicerworker.js
+++ b/src/slicerworker.js
@@ -10,7 +10,7 @@ D3D.SlicerWorker = function () {
 		switch (event.data["cmd"]) {
 			case "PROGRESS":
 				var progress = event.data["progress"];
-				var procent = (progress.sliceLayer + progress.dataLayer + progress.gcodeLayer) / progress.totalLayers / 3;
+				var procent = (progress.sliceLayer + progress.dataLayer + progress.gcodeLayer) / (progress.totalLayers * 3 - 5);
 				progressBar.style.width = procent * 100 + "%";
 			break;
 
@@ -38,7 +38,7 @@ D3D.SlicerWorker.prototype.setMesh = function (mesh) {
 	else {
 		var geometry = mesh.geometry.clone();
 	}
-	
+
 	var buffers = [];
 
 	for (var i = 0; i < geometry.attributesKeys.length; i ++) {
@@ -50,7 +50,10 @@ D3D.SlicerWorker.prototype.setMesh = function (mesh) {
 
 	this.worker.postMessage({
 		"cmd": "SET_MESH", 
-		"geometry": geometry, 
+		"geometry": {
+			"attributes": geometry.attributes, 
+			"attributesKeys": geometry.attributesKeys
+		}, 
 		"matrix": mesh.matrix.toArray()
 	}, buffers);
 };
diff --git a/webworker/worker.js b/webworker/worker.js
index 5818184..1974d0f 100644
--- a/webworker/worker.js
+++ b/webworker/worker.js
@@ -23,7 +23,11 @@ self.addEventListener("message", function (event) {
 
 	switch (event.data["cmd"]) {
 		case "SET_MESH": 
-
+			
+			//hack...
+			//because boundings loses functions when converting
+			event.data["geometry"].boundingBox = event.data["geometry"].boundingSphere = null;
+			
 			var geometry = new THREE.Geometry().fromBufferGeometry(event.data["geometry"]);
 			var matrix = new THREE.Matrix4().fromArray(event.data["matrix"]);
 
diff --git a/webworker_test.html b/webworker_test.html
index 9c08303..5dacd3d 100644
--- a/webworker_test.html
+++ b/webworker_test.html
@@ -31,20 +31,21 @@ function init () {
 	var scene = createScene();
 
 	var localIp = location.hash.substring(1);
-	//doodleBox = new D3D.Box(localIp);
+	doodleBox = new D3D.Box(localIp);
 
 	var slicer = new D3D.SlicerWorker();
 
 	slicer.setSettings(USER_SETTINGS, PRINTER_SETTINGS["ultimaker"]);
 
 	var loader = new THREE.STLLoader();
-	loader.load("models/stanford_bunny_high.stl", function (geometry) {
+	loader.load("models/dom.stl", function (geometry) {
+		//var geometry = new THREE.TorusGeometry(20, 10, 30, 30).clone();
 		var material = new THREE.MeshPhongMaterial({color: 0x00ff00, wireframe: false});
 		var mesh = new THREE.Mesh(geometry, material);
 		
 		mesh.rotation.x = -Math.PI/2;
-		mesh.scale.x = mesh.scale.y = mesh.scale.z = 0.5;
-		mesh.position.y = -9.260265119962973e-17;
+		mesh.scale.x = mesh.scale.y = mesh.scale.z = 1;
+		//mesh.position.y = -9.260265119962973e-17;
 		mesh.position.x = 100;
 		mesh.position.z = 100;