diff --git a/index.html b/index.html
old mode 100644
new mode 100755
index 0edffa1..1cd3b0a
--- a/index.html
+++ b/index.html
@@ -56,7 +56,14 @@ <h1 class='title'>Hole Cutter</h1>
                       <label class='advanced' for="bit-diameter">Bit Diameter (in)</label>
                       <input class='advanced' id="bit-diameter" type="number" step="any" data-parsley-required="true"  placeholder="Bit Diameter" data-parsley-maxlength="5" data-parsley-min="0"	  value="0.25" disabled>
                     </div>
+                    <div class="pure-control-group"> 
+                      <label class='advanced' for="use-current-XY">Use Current XY as center of hole</label>
+                      <input class='advanced' id="use-current-XY" type="checkbox" placeholder="Use Current XY" value=False disabled>
+                      <br>
+                      <br>
+                    </div>
                     <button  id="submit" >Next</button>
+                    <div id="err-msg"><div>
                   </fieldset>
                 </div>
              
diff --git a/js/main.js b/js/main.js
old mode 100644
new mode 100755
index 0fedc1c..42ca5b8
--- a/js/main.js
+++ b/js/main.js
@@ -3,6 +3,16 @@ var yMax = 8.0;
 var xCenter = xMax / 2;
 var yCenter = yMax / 2;
 
+var machineX = 0.0;
+var machineY = 0.0;
+var machineX = 0.0;
+
+fabmo.on('status', function(status) {
+  machineX = status.posx;
+  machineY = status.posy;
+  machineZ = status.posz;
+});
+
 function getConfig(callback) {
   if(fabmo.isPresent()) {
     return fabmo.getConfig(callback);
@@ -29,6 +39,7 @@ $(document).ready(function() {
       $('#diameter').attr('data-parsley-max', xMax);
     }
   });
+  fabmo.requestStatus();
 });
 
 var $selector = $('#signupForm'),
@@ -115,10 +126,17 @@ function makeCircle(config) {
   var depth = Math.abs(parseFloat($('#depth').val()));
   var bitDiameter = parseFloat($('#bit-diameter').val());
   var actualDiameter = (diameter - bitDiameter);
+  if (actualDiameter==0) actualDiameter = 0.001;
   var depthTotal = depth + cutThrough;
   var maxPlunge = bitDiameter * .75;
   var passes = Math.ceil(depthTotal / maxPlunge);
   var plunge = (0 - (depthTotal / passes)).toFixed(5);
+  var useCurrentXY = $('#use-current-XY').is(":checked");
+  if (useCurrentXY){
+    xCenter = machineX;
+    yCenter = machineY;
+  }
+    
   var shopbotCode = ["'Simple Circle'",
     "'Center: " + xCenter + "," + yCenter + "  Diameter: " + diameter + "'",
     "'Bit Diameter: " + bitDiameter + "'",
@@ -133,10 +151,15 @@ function makeCircle(config) {
     "JZ, 1",
     "'Spindle Off'",
     "SO, 1,0",
-    "'Jog Home'",
-    "J2, 0,0"
+    useCurrentXY?"":"'Jog Home'",
+    useCurrentXY?"":"J2, 0,0"
   ];
   var code = shopbotCode.join('\n');
+  if (actualDiameter<=0){
+    $("#err-msg").text("Can not cut a "+diameter+" inch hole with a "+bitDiameter+" inch bit.");
+    return; 
+  }
+  $("#err-msg").text("");
   fabmo.submitJob({
     file: code,
     filename: 'example-circle.sbp',
diff --git a/package.json b/package.json
old mode 100644
new mode 100755
index 6bb1ea5..fba1bf7
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "main": "./index.html",
   "icon": "hole-icon.png",
   "icon_color": "white",
-  "version": "1.0.2",
+  "version": "1.0.2.1",
   "author": "Brendan Collins",
   "website": "http://www.shopbottools.com",
   "description": "Cut holes of specified dimensions",