diff --git a/Gruntfile.js b/Gruntfile.js
index a008876..ea14fac 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -16,6 +16,9 @@ module.exports = function(grunt) {
       },
       js: {
         src: [
+          'js_src/Shape.js',
+          'js_src/Svg.js',
+          'js_src/Keyboard.js',
           'js_src/SettingsWindow.js',
           'js_src/UpdatePanel.js',
           'js_src/PrinterPanel.js',
diff --git a/js_src/Keyboard.js b/js_src/Keyboard.js
new file mode 100644
index 0000000..67e936d
--- /dev/null
+++ b/js_src/Keyboard.js
@@ -0,0 +1,30 @@
+var keyboardShortcutsEnabled = true;
+
+function initKeyboard() {
+
+	$(document).keypress(function(event) {
+
+		if (!keyboardShortcutsEnabled) return;
+
+		var ch = String.fromCharCode(event.which);
+
+		switch (ch) {
+			case 'c': clearDoodle(); break;
+			case 'p': print(); break;
+			case 'u': oopsUndo(); break;
+			case 'e': settingsWindow.downloadGcode(); break;
+			case 'q': stopPrint(); break;
+			case ',': openSettingsWindow(); break;
+			case 'C': drawCircle(250,180,80,64); break; //x,y,r,res 
+			case 'T': drawCircle(250,180,80,3); break; //triangle
+			case 'X': drawCircle(250,180,80,6); break; //hexagon
+			case 'H': previewUp(true); break;
+			case 'h': previewDown(true); break;
+			case '[': previewTwistLeft(); break;
+			case ']': previewTwistRight(); break;
+			case '\'': resetTwist(); break;
+			default: console.log("Key: '" + ch + "' (" + event.which + ")");
+		}
+	})
+
+}
\ No newline at end of file
diff --git a/js_src/SettingsWindow.js b/js_src/SettingsWindow.js
index 952d143..02f420d 100644
--- a/js_src/SettingsWindow.js
+++ b/js_src/SettingsWindow.js
@@ -159,6 +159,7 @@ function SettingsWindow() {
 	}
 
 	this.showSettings = function() {
+		keyboardShortcutsEnabled = false;
 	  this.loadSettings(function() { // reload settings
 	  	$("#contentOverlay").fadeIn(375, function() {
 				document.body.removeEventListener('touchmove',prevent,false);
@@ -166,6 +167,7 @@ function SettingsWindow() {
 	  });
 	}
 	this.hideSettings = function(complete) {
+		keyboardShortcutsEnabled = true;
 		$("#contentOverlay").fadeOut(375, function() {
       document.body.addEventListener('touchmove',prevent,false);
 //      self.window.css("display","none");
@@ -365,6 +367,14 @@ function SettingsWindow() {
 	this.downloadlogs = function() {
 		window.location.href = self.wifiboxURL + "/info/logfiles"
 	}
+
+	this.downloadGcode = function() {
+		var gcode = generate_gcode();
+		if (gcode!=undefined) {
+			var blob = new Blob([gcode.join("\n")], {type: "text/plain;charset=utf-8"});
+			saveAs(blob, "doodle3d.gcode");
+		}
+	}
 	
 	/*
 	 * Networks ui
diff --git a/js_src/Shape.js b/js_src/Shape.js
new file mode 100644
index 0000000..4d3ac17
--- /dev/null
+++ b/js_src/Shape.js
@@ -0,0 +1,34 @@
+function drawCircle(x0,y0,r,res) {
+  if (res==undefined) res = 50; //circle resolution
+  beginShape();
+  var step=Math.PI * 2.0 / res;
+  for (var a=0; a<=Math.PI*2; a+=step) {
+    var x = Math.sin(a) * r + x0;
+    var y = Math.cos(a) * r + y0;
+    if (a==0) shapeMoveTo(x,y);
+    else shapeLineTo(x,y);
+  }
+  endShape();
+}
+
+function beginShape(x,y) {
+  setSketchModified(true);
+}
+
+function shapeMoveTo(x,y) {
+  _points.push([x, y, true]);
+  adjustBounds(x, y)
+  adjustPreviewTransformation();
+  draw(x, y, .5);
+}
+
+function shapeLineTo(x,y) {
+  _points.push([x, y, false]);
+  adjustBounds(x, y)
+  adjustPreviewTransformation();
+  draw(x, y);
+}
+
+function endShape() {
+  renderToImageDataPreview();
+}
\ No newline at end of file
diff --git a/js_src/Svg.js b/js_src/Svg.js
new file mode 100644
index 0000000..6451624
--- /dev/null
+++ b/js_src/Svg.js
@@ -0,0 +1,132 @@
+//SVG validator: http://validator.w3.org/
+//SVG viewer: http://svg-edit.googlecode.com/svn/branches/2.6/editor/svg-editor.html
+function saveToSvg() {
+  var lastX = 0, lastY = 0, lastIsMove;
+  var svg = '';
+
+  var boundsWidth = doodleBounds[2] - doodleBounds[0];
+  var boundsHeight = doodleBounds[3] - doodleBounds[1];
+
+  svg += '<?xml version="1.0" standalone="no"?>\n';
+  svg += '<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">\n';
+  svg += '<svg width="' + boundsWidth + '" height="' + boundsHeight + '" version="1.1" xmlns="http://www.w3.org/2000/svg">\n';
+  svg += '\t<desc>Doodle 3D sketch</desc>\n';
+
+  var data = '';
+  for (var i = 0; i < _points.length; ++i) {
+    var x = _points[i][0], y = _points[i][1], isMove = _points[i][2];
+    var dx = x - lastX, dy = y - lastY;
+
+    if (i == 0)
+      data += 'M'; //emit absolute move on first pair of coordinates
+    else if (isMove != lastIsMove)
+      data += isMove ? 'm' : 'l';
+
+    data += dx + ',' + dy + ' ';
+
+    lastX = x;
+    lastY = y;
+    lastIsMove = isMove;
+  }
+
+  svg += '\t<path transform="translate(' + -doodleBounds[0] + ',' + -doodleBounds[1] + ')" d="' + data + '" fill="none" stroke="black" stroke-width="2" />\n';
+
+  var fields = JSON.stringify({'height': numLayers, 'outlineShape': VERTICALSHAPE, 'twist': rStep});
+  svg += '\t<!--<![CDATA[d3d-keys ' + fields + ']]>-->\n';
+
+  svg += '</svg>\n';
+
+  return svg;
+}
+
+
+//TODO: use local variables instead of _points,numLayers,VERTICALSHAPE and rStep so we can leave a current doodle in tact if an error occurs while parsing
+function loadFromSvg(svgData) {
+  var mode = '', x = 0, y = 0;
+
+  console.log("loading " + svgData.length + " bytes of data...");
+
+  clearDoodle();
+
+  var p = svgData.indexOf("<path");
+  if (p == -1) { console.log("loadFromSvg: could not find parsing start point"); return false; }
+  p = svgData.indexOf('d="', p);
+  if (p == -1) { console.log("loadFromSvg: could not find parsing start point"); return false; }
+  p += 3; //skip 'd="'
+
+  var skipSpace = function() { while (svgData.charAt(p) == ' ') p++; }
+  var parseCommand = function() {
+    while (true) {
+      skipSpace();
+      var c = svgData.charAt(p);
+      if (c == 'M' || c == 'm' || c == 'l') { //new command letter
+        mode = c;
+      } else if (c == '"') { //end of command chain
+        return true;
+      } else { //something else, must be a pair of coordinates...
+        var tx = 0, ty = 0, numberEnd = 0, len = 0;
+        numberEnd = svgData.indexOf(',', p);
+        if (numberEnd == -1) { console.log("could not find comma in coordinate pair"); return false; }
+        len = numberEnd - p;
+        tx = parseInt(svgData.substr(p, len));
+        p += len + 1;
+        skipSpace();
+        numberEnd = svgData.indexOf(' ', p);
+        if (numberEnd == -1) { console.log("could not find space after coordinate pair"); return false; }
+        len = numberEnd - p;
+        ty = parseInt(svgData.substr(p, len));
+        p += len;
+
+        if (mode == 'M' || mode == 'L') {
+          x = tx; y = ty;
+        } else if (mode == 'm' || mode == 'l') {
+          x += tx; y += ty;
+        } else {
+          console.log("loadFromSvg: found coordinate pair but mode was never set");
+          return false;
+        }
+
+        var isMove = mode == 'm' || mode == 'M';
+
+        //TODO: create script-wide function for adding points?
+        //console.log("inserting "+x+","+y+" ",isMove);
+        updatePrevX = x;
+        updatePrevY = y;
+        _points.push([x, y, isMove]);
+        adjustBounds(x, y);
+        adjustPreviewTransformation();
+
+        if (isMove) draw(x, y, .5);
+        else draw(x, y);
+      }
+      p++;
+    }
+
+    return true;
+  };
+
+  parseCommand(); //depends on value of p, so don't move this without taking that into consideration
+
+  const fieldDefMarker = "<!--<![CDATA[d3d-keys";
+  p = svgData.indexOf(fieldDefMarker);
+  if (p == -1) { console.log("loadFromSvg: could not find metadata marker"); return false; }
+  p += fieldDefMarker.length;
+  skipSpace();
+
+  var endP = svgData.indexOf("]]>-->", p);
+  if (endP == -1) { console.log("loadFromSvg: could not find metadata end-marker"); return false; }
+  var metaFields = JSON.parse(svgData.substr(p, endP - p));
+  //TODO: log error and return false if parsing failed
+  for (var k in metaFields) {
+    var v = metaFields[k];
+    switch (k) {
+      case "height": numLayers = v; break;
+      case "outlineShape": VERTICALSHAPE = v; break;
+      case "twist": rStep = v; break;
+    }
+  }
+
+  renderToImageDataPreview();
+
+  return true;
+}
\ No newline at end of file
diff --git a/js_src/buttonbehaviors.js b/js_src/buttonbehaviors.js
index 9cd016a..f365206 100644
--- a/js_src/buttonbehaviors.js
+++ b/js_src/buttonbehaviors.js
@@ -246,10 +246,10 @@ function print(e) {
 				console.log("sendPrintCommands is false: not sending print command to 3dprinter");
 			}
 
-			if (debugMode) {
-				$("#textdump").text("");
-				$("#textdump").text(gcode.join("\n"));
-			}
+			// if (debugMode) {
+			// 	$("#textdump").text("");
+			// 	$("#textdump").text(gcode.join("\n"));
+			// }
 
     }, gcodeGenerateDelay);
   } else {
@@ -336,7 +336,11 @@ function previewTwistRight(redrawLess) {
   setSketchModified(true);
 }
 
-
+function resetTwist() {
+  rStep = 0;
+  redrawRenderedPreview();
+  setSketchModified(true);
+}
 
 function update() {
 	setState(printer.state,printer.hasControl);
diff --git a/js_src/canvasDrawing.js b/js_src/canvasDrawing.js
index c67a79d..582eee2 100644
--- a/js_src/canvasDrawing.js
+++ b/js_src/canvasDrawing.js
@@ -477,136 +477,6 @@ function prevent(e) {
 }
 
 
-//SVG validator: http://validator.w3.org/
-//SVG viewer: http://svg-edit.googlecode.com/svn/branches/2.6/editor/svg-editor.html
-function saveToSvg() {
-  var lastX = 0, lastY = 0, lastIsMove;
-  var svg = '';
-
-  var boundsWidth = doodleBounds[2] - doodleBounds[0];
-  var boundsHeight = doodleBounds[3] - doodleBounds[1];
-
-  svg += '<?xml version="1.0" standalone="no"?>\n';
-  svg += '<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">\n';
-  svg += '<svg width="' + boundsWidth + '" height="' + boundsHeight + '" version="1.1" xmlns="http://www.w3.org/2000/svg">\n';
-  svg += '\t<desc>Doodle 3D sketch</desc>\n';
-
-  var data = '';
-  for (var i = 0; i < _points.length; ++i) {
-    var x = _points[i][0], y = _points[i][1], isMove = _points[i][2];
-    var dx = x - lastX, dy = y - lastY;
-
-    if (i == 0)
-      data += 'M'; //emit absolute move on first pair of coordinates
-    else if (isMove != lastIsMove)
-      data += isMove ? 'm' : 'l';
-
-    data += dx + ',' + dy + ' ';
-
-    lastX = x;
-    lastY = y;
-    lastIsMove = isMove;
-  }
-
-  svg += '\t<path transform="translate(' + -doodleBounds[0] + ',' + -doodleBounds[1] + ')" d="' + data + '" fill="none" stroke="black" stroke-width="2" />\n';
-
-  var fields = JSON.stringify({'height': numLayers, 'outlineShape': VERTICALSHAPE, 'twist': rStep});
-  svg += '\t<!--<![CDATA[d3d-keys ' + fields + ']]>-->\n';
-
-  svg += '</svg>\n';
-
-  return svg;
-}
 
 
-//TODO: use local variables instead of _points,numLayers,VERTICALSHAPE and rStep so we can leave a current doodle in tact if an error occurs while parsing
-function loadFromSvg(svgData) {
-  var mode = '', x = 0, y = 0;
-
-  console.log("loading " + svgData.length + " bytes of data...");
-
-  clearDoodle();
-
-  var p = svgData.indexOf("<path");
-  if (p == -1) { console.log("loadFromSvg: could not find parsing start point"); return false; }
-  p = svgData.indexOf('d="', p);
-  if (p == -1) { console.log("loadFromSvg: could not find parsing start point"); return false; }
-  p += 3; //skip 'd="'
-
-  var skipSpace = function() { while (svgData.charAt(p) == ' ') p++; }
-  var parseCommand = function() {
-    while (true) {
-      skipSpace();
-      var c = svgData.charAt(p);
-      if (c == 'M' || c == 'm' || c == 'l') { //new command letter
-        mode = c;
-      } else if (c == '"') { //end of command chain
-        return true;
-      } else { //something else, must be a pair of coordinates...
-        var tx = 0, ty = 0, numberEnd = 0, len = 0;
-        numberEnd = svgData.indexOf(',', p);
-        if (numberEnd == -1) { console.log("could not find comma in coordinate pair"); return false; }
-        len = numberEnd - p;
-        tx = parseInt(svgData.substr(p, len));
-        p += len + 1;
-        skipSpace();
-        numberEnd = svgData.indexOf(' ', p);
-        if (numberEnd == -1) { console.log("could not find space after coordinate pair"); return false; }
-        len = numberEnd - p;
-        ty = parseInt(svgData.substr(p, len));
-        p += len;
-
-        if (mode == 'M' || mode == 'L') {
-          x = tx; y = ty;
-        } else if (mode == 'm' || mode == 'l') {
-          x += tx; y += ty;
-        } else {
-          console.log("loadFromSvg: found coordinate pair but mode was never set");
-          return false;
-        }
-
-        var isMove = mode == 'm' || mode == 'M';
-
-        //TODO: create script-wide function for adding points?
-        //console.log("inserting "+x+","+y+" ",isMove);
-        updatePrevX = x;
-        updatePrevY = y;
-        _points.push([x, y, isMove]);
-        adjustBounds(x, y);
-        adjustPreviewTransformation();
-
-        if (isMove) draw(x, y, .5);
-        else draw(x, y);
-      }
-      p++;
-    }
-
-    return true;
-  };
-
-  parseCommand(); //depends on value of p, so don't move this without taking that into consideration
-
-  const fieldDefMarker = "<!--<![CDATA[d3d-keys";
-  p = svgData.indexOf(fieldDefMarker);
-  if (p == -1) { console.log("loadFromSvg: could not find metadata marker"); return false; }
-  p += fieldDefMarker.length;
-  skipSpace();
-
-  var endP = svgData.indexOf("]]>-->", p);
-  if (endP == -1) { console.log("loadFromSvg: could not find metadata end-marker"); return false; }
-  var metaFields = JSON.parse(svgData.substr(p, endP - p));
-  //TODO: log error and return false if parsing failed
-  for (var k in metaFields) {
-    var v = metaFields[k];
-    switch (k) {
-      case "height": numLayers = v; break;
-      case "outlineShape": VERTICALSHAPE = v; break;
-      case "twist": rStep = v; break;
-    }
-  }
-
-  renderToImageDataPreview();
-
-  return true;
-}
 
diff --git a/js_src/main.js b/js_src/main.js
index 0eb87d4..8b4c086 100644
--- a/js_src/main.js
+++ b/js_src/main.js
@@ -25,8 +25,6 @@ var clientInfo = {};
 $(function() {
   console.log("ready");
 
-  //TODO give this a more logical place in code
-
   if (getURLParameter("d") != "null") debugMode = (getURLParameter("d") == "1");
   if (getURLParameter("p") != "null") sendPrintCommands = (getURLParameter("p") == "1");
   if (getURLParameter("c") != "null") communicateWithWifibox = (getURLParameter("c") == "1");
@@ -59,6 +57,7 @@ $(function() {
   initLayouting();
   initSidebars();
   initButtonBehavior();
+  initKeyboard();
   initVerticalShapes();
   if (!clientInfo.isSmartphone) initHelp();
 
diff --git a/js_src/previewRendering.js b/js_src/previewRendering.js
index 6c3c825..c28314b 100644
--- a/js_src/previewRendering.js
+++ b/js_src/previewRendering.js
@@ -7,7 +7,7 @@ var preview_tmp;
 var previewCtx_tmp;
 
 var previewDefaults = {
-  rotation: Math.PI/90,
+  rotation: 0, //Math.PI/90,
   numLayers: 10
 }
 
diff --git a/www/index.html b/www/index.html
index 1c50f65..f07d33f 100644
--- a/www/index.html
+++ b/www/index.html
@@ -102,7 +102,8 @@
     </div>
   </div>
   <div id="debug_textArea">
-    <textarea rows="5" cols="60" id="textdump"></textarea>
+    <!-- <textarea rows="5" cols="60" id="textdump"></textarea> -->
+    <button onclick="settingsWindow.downloadGcode()">Download gcode</button>
   </div>
   <div id="debug_display">
   </div>
@@ -135,6 +136,7 @@
 <!--<script src="../js_src/libs/jquery-joyride-2-1.js"></script>-->
 <script src="js/libs/jquery-joyride-2-1.min.js"></script>
 <script src="js/libs/jquery-coolfieldset.min.js"></script>
+<script src="js/libs/FileSaver.js"></script>
 <!--<script src="js/doodle3d-client.js"></script>-->
 <script src="js/doodle3d-client.min.js"></script>
 
diff --git a/www/settings.html b/www/settings.html
index 37e38d9..d738b77 100644
--- a/www/settings.html
+++ b/www/settings.html
@@ -160,6 +160,7 @@
     <fieldset id="debugPanel">
  		<legend>Debug</legend>
  		<input type="button" onclick="settingsWindow.downloadlogs()" name="downloadlogs" value="Download logs" class="button" id="downloadlogs"/>
+    <input type="button" onclick="settingsWindow.downloadGcode()" name="downloadGcode" value="Download gcode" class="button" id="downloadGcode"/>
     </fieldset>
     <fieldset id="restorePanel">
  		<legend>Restore</legend>