Greetings to all. In this video, we will create the last detail of the door D4. This detail is a doorknob. After adding this, we will make this element become a component that will be used in the model. Here, we will use the Follow Me tool, Circle tool, and Scale tool. Let's get started. Now, we are going to draw a doorknob. First, we draw a circle with a radius of 2.5 centimeters. This circle's center is at origin. Next, we draw the borderline for doorknob. We will use Follow Me function to draw door knob once we have completed a polygon to follow the circle we draw at the beginning. So we draw a five-centimeters line parallel to the blue axis in the intersection between the circle and red axis. Then we switch to the front view to draw a two-centimeters line with an angle of 45 degrees, then a one-centimeters horizontal line. Next, we draw three-centimeters vertical line at the middle of the horizontal line. Here, we can delete some unnecessary lines and then we can also add a line that connected to the origin to the vertical line in the circle red axis intersection. Once we draw all these lines, we make them a group. Then, we duplicate the group and we place it above it. Since we want to mirror it, we select Scale tool and input minus one to mirror it. Then, we adjust the position of the copied group, so that it will become pretty, the other half of the doorknob. Now, we use both the groups and draw a line to enclose the polygon. Now, we click on the edge of the circle and select Follow Me tool, then we click on the enclosed area to complete the doorknob. With our doorknob completed, we can curve it. There, we get a simple doorknob. Next, we need to rotate the vertical doorknob to a horizontal direction. Since we want to it direction to match the door's direction, we first select X ray to display the model with transparent phases. Then we select the Rotate tool. Since the surface of the doorknob has a curvature, the rotation operation becomes not easy. Here's a tip, we just press the right arrow key on the keyboard and then we will see that the rotate cursor turn red. This means that our selected object will rotate on the red axis. Then we rotate the doorknob 90-degree. Now, we make a hole in the door, place our doorknob. We first deselect X ray because this will simplify the next steps. Then we'll select the Tape Measure tool to draw our guideline, eight centimeters from the door edge. Next, we draw a horizontal line at the vertical middle of the door. The intersection of these lines will be the position of the doorknob center. Now, we select X ray again to make the object transparent and also to find points of the group easily. Next, we use the Move tool to move the doorknob to the intersection. After we get the right position, we just delete guideline and unnecessary lines. With the doorknob in the right position, we can Explode all groups and proceed to turn the whole door structure into a component. We name this D4 then we add a dimension 90x210 to the description. Then we will change Glue to to any. Next, we'll select Cut Opening and click on Set Component Axes to set up origin point in the axes. And finally, we obtain our new component called D4. In this class, we learned how to draw a doorknob. Due to the complexity of the process, it's recommended to always keep elements such as door and windows as components. Congratulations. Here we end the window module. See you in the next module.