diff --git a/README.md b/README.md
index c69211b..a09c8a1 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ doodleBox.onload = function () {
   var geometry = new THREE.TorusGeometry(40, 20, 10, 10);
 
   var slicer = new D3D.Slicer().setGeometry(geometry);
-  var gcode = slicer.getGcode(doodlBox.printer);
+  var gcode = slicer.getGcode(doodleBox.printer);
   
   doodleBox.print(gcode);
 };
diff --git a/slice_test.html b/slice_test.html
index 37e4969..aaa29a0 100644
--- a/slice_test.html
+++ b/slice_test.html
@@ -25,15 +25,17 @@ canvas {border: 1px solid black;}
 <canvas id="canvas" width="400" height="400"></canvas>
 
 <script>
+//nieuwe config
+//geimplimenteerd worden in de doodlebox?
 var printerConfig = {
-	"printer.baudrate": "115200", 
+	"printer.baudrate": "115200", //wat is dit?
 	"printer.bed.temperature": 70, 
 	"printer.bottomFlowRate": 1.0, 
 	"printer.bottomLayerSpeed": 35, 
 	"printer.dimensions.x": 200, 
 	"printer.dimensions.y": 200, 
 	"printer.dimensions.z": 200, 
-	"printer.enableTraveling": true, 
+	"printer.enableTraveling": true,  //wat is dit?
 	"printer.endcode": "M107 ;fan off\nG91 ;relative positioning\nG1 E-1 F300 ;retract the filament a bit before lifting the nozzle, to release some of the pressure\nG1 Z+0.5 E-5 X-20 Y-20 F9000 ;move Z up a bit and retract filament even more\nG28 X0 Y0 ;move X/Y to min endstops, so the head is out of the way\nM84 ;disable axes / steppers\nG90 ;absolute positioning\nM104 S{preheatTemp}\n{if heatedBed}M140 S{preheatBedTemp}\nM117 Done                 ;display message (20 characters to clear whole screen)", 
 	"printer.filamentThickness": 2.89, 
 	"printer.firstLayerSlow": true, 
@@ -52,8 +54,15 @@ var printerConfig = {
 	"printer.temperature": 230, 
 	"printer.travelSpeed": 200, 
 	"printer.type": "ultimaker", 
-	"printer.useSubLayers": true, 
-	"printer.wallThickness": 0.5
+	"printer.useSubLayers": true, //wat is dit?
+	"printer.wallThickness": 0.4,
+
+	//variabele toevoegen;
+	//overleg met rick;
+	//-snelheid, retraction etc voor verschillende types (outerlayer, innerlayer, fill)
+	"printer.shellThickness": 0.8, 
+	"printer.fillSize": 5, //dit is het raster aan de binnen kant van de geometry
+	"printer.brimOffset": 5 
 };
 var printer = new D3D.Printer(printerConfig);
 
@@ -94,8 +103,8 @@ var geometry = (function () {
 })();
 
 var material = new THREE.MeshLambertMaterial({color: 0x000000, wireframe: true});
-//var geometry = new THREE.TorusGeometry(40, 20, 10, 10);
-var geometry = new THREE.BoxGeometry(20, 10, 20, 1, 1, 1);
+var geometry = new THREE.TorusGeometry(20, 10, 10, 10);
+//var geometry = new THREE.BoxGeometry(20, 5, 20, 1, 1, 1);
 //var geometry = new THREE.SphereGeometry(10, 10, 10);
 var mesh = new THREE.Mesh(geometry, material);
 scene.add(mesh);
@@ -110,7 +119,8 @@ var slicer = new D3D.Slicer().setGeometry(geometry);
 
 var gcode = slicer.getGcode(printer);
 
-/*var canvas = document.getElementById("canvas");
+/*
+var canvas = document.getElementById("canvas");
 var context = canvas.getContext("2d");
 
 function drawPolygons (paths, color) {
@@ -123,26 +133,33 @@ function drawPolygons (paths, color) {
 	for (var i = 0; i < paths.length; i ++) {
 		var path = paths[i];
 
-		context.moveTo((path[0].X- 100) * 8.0 + 200, (path[0].Y- 100) * 8.0 + 200);
+		context.moveTo((path[0].X- 100) * 6.0 + 200, (path[0].Y- 100) * 6.0 + 200);
 
 		for (var j = 0; j < path.length; j ++) {
 			var point = path[j];
-			context.lineTo((point.X- 100) * 8.0 + 200, (point.Y- 100) * 8.0 + 200);
+			context.lineTo((point.X- 100) * 6.0 + 200, (point.Y- 100) * 6.0 + 200);
 		}
 		context.closePath();
 	}
 	context.stroke();
 }
 
-for (var layer = 0; layer < gcode.length; layer ++) {
+var layer = 0;
+setInterval(function () {
+	context.clearRect(0, 0, 400, 400);
+//for (var layer = 0; layer < gcode.length; layer ++) {
 	//var layer = 31;
-	var slice = gcode[layer];
+	var slice = gcode[layer % gcode.length];
 
-	drawPolygons(slice.outerLayer, "red");
-	drawPolygons(slice.innerLayer, "green");
+	//drawPolygons(slice.outerLayer, "red");
+	//drawPolygons(slice.innerLayer, "green");
 	drawPolygons(slice.fill, "blue");
-}*/
 
+	context.fillText("layer: " + layer, 10, 10);
+//}
+	layer ++;
+}, 100);
+*/
 
 (function animate () {
 	"use strict";
diff --git a/src/slicer.js b/src/slicer.js
index 19c0980..f84acd6 100644
--- a/src/slicer.js
+++ b/src/slicer.js
@@ -199,26 +199,24 @@ D3D.Slicer.prototype.getFillTemplate = function (dimension, size, even, uneven)
 D3D.Slicer.prototype.slicesToData = function (slices, printer) {
 	"use strict";
 
-	var data = [];
-
 	//scale because of clipper crap
 	var scale = 100;
 
 	var layerHeight = printer.config["printer.layerHeight"] * scale;
 	var dimensionsZ = printer.config["printer.dimensions.z"] * scale;
-	//variables should come from config
-	//aan rick voorleggen
-	var nozzleSize = 0.4 * scale;
-	var shellThickness = 0.8 * scale;
-	var fillSize = 5 * scale;
-	var brimOffset = 5 * scale;
+	var wallThickness = printer.config["printer.wallThickness"] * scale;
+	var shellThickness = printer.config["printer.shellThickness"] * scale;
+	var fillSize = printer.config["printer.fillSize"] * scale;
+	var brimOffset = printer.config["printer.brimOffset"] * scale;
+
+	var data = [];
 
 	var lowFillTemplate = this.getFillTemplate(dimensionsZ, fillSize, true, true);
-	
 
 	for (var layer = 0; layer < slices.length; layer ++) {
 		var slice = slices[layer];
-		var highFillTemplate = this.getFillTemplate(dimensionsZ, nozzleSize, (layer % 2 === 0), (layer % 2 === 1));
+
+		var highFillTemplate = this.getFillTemplate(dimensionsZ, wallThickness, (layer % 2 === 0), (layer % 2 === 1));
 
 		//var outerLayer = ClipperLib.JS.Clean(slice, 1.0);
 		var outerLayer = slice.clone();
@@ -226,17 +224,17 @@ D3D.Slicer.prototype.slicesToData = function (slices, printer) {
 
 		var innerLayer = [];
 
-		for (var i = nozzleSize; i < shellThickness; i += nozzleSize) {
+		for (var i = wallThickness; i < shellThickness; i += wallThickness) {
 			var inset = this.getInset(outerLayer, i);
 
 			innerLayer = innerLayer.concat(inset);
 		}
 
-		var fillArea = this.getInset((inset || outerLayer), nozzleSize);
+		var fillArea = this.getInset((inset || outerLayer), wallThickness);
 
 		var highFill;
 
-		var fillAbove;
+		var fillAbove = undefined;
 		for (var i = 1; i < shellThickness/layerHeight; i ++) {
 			var newLayer = ClipperLib.JS.Clone(slices[layer + i]);
 			ClipperLib.JS.ScaleUpPaths(newLayer, scale);
@@ -247,21 +245,16 @@ D3D.Slicer.prototype.slicesToData = function (slices, printer) {
 				break;
 			}
 			else if (fillAbove === undefined) {
-
-			}
-			else {
-
-			}
-
-			if (fillAbove === undefined) {
 				fillAbove = newLayer;
 			}
 			else {
-			//	var c = new ClipperLib.Clipper();
-			//	var solution = new ClipperLib.Paths();
-			//	c.AddPaths(fillArea, ClipperLib.PolyType.ptSubject, true);
-			//	c.AddPaths(fillAbove, ClipperLib.PolyType.ptClip, true);
-			//	c.Execute(ClipperLib.ClipType.ctDifference, solution);
+				var c = new ClipperLib.Clipper();
+				var solution = new ClipperLib.Paths();
+				c.AddPaths(fillArea, ClipperLib.PolyType.ptSubject, true);
+				c.AddPaths(fillAbove, ClipperLib.PolyType.ptClip, true);
+				c.Execute(ClipperLib.ClipType.ctIntersection, solution);
+
+				fillAbove = solution;
 			}
 		}
 		//kijkt alleen nog naar boven