Merging models into one

        Model newModel = new Model();
        newModel.nodes.addAll(shotgun.nodes);
        for(int i = 0; i < stock.nodes.size; i++){
            Node node = stock.nodes.get(i);
            node.translation.add(new Vector3(.05f, .35f, .55f));
            newModel.nodes.add(node);
        }
        ModelInstance inst = new ModelInstance(newModel);