Pay close attention to the marking rubric which will act as a strong guide and will help you make decisions about which 3D features to utilize. The weighting assigned to presenting the correct part is just 25%, so it is important that along the way you choose the most appropriate 3D features for each aspect of the part. To gain full marks, you must demonstrate that you can use the following tools in appropriate circumstance (alongside adhering to the other marking criteria): Extrude Join Extrude Cut Revolve Hole Feature 3D Patterns Fillet OR Chamfer (whichever the drawing requires you to use) Loft OR Rib Mirror