gistfile1.txt

response = $.getJSON("/pcr.json");
data = JSON.parse(response.responseText);

newData = {"Printer":{}, "Cutter": {}, "Router": []}
$(data).each( function() {
 obj = this;
 if (obj.type == "Router") {
   newData[obj.type].push(obj.make);
 } else {
   if (!newData[obj.type][obj.make]) {
     newData[obj.type][obj.make] = [];
   }
 model = toString(obj.model);
 newData[obj.type][obj.make].push(obj.model);
 }
});
JSON.stringify(newData)