1. Sketch 1 Set temporary working directory: File -> Set Working Directory, select working directory. New -> click on the Sketch button & fill in the name filed. Note: the default file name for first sketch is ‘ s2d001 ’, where s means sketch, 2d means two dimensional, and 001 means the first sketch. You can use either default name or other name. When start sketching, the name can not be changed. Straight line: Sketch toolbar -> line (Create 2 point lines) Using left mouse key to determine the starting & ending points. Press middle mouse key to stop drawing. Constraints: ‘ H ’ means horizontal, ‘ V ’ means vertical, ‘ T ’ means tangent, etc. Constraint On/Off button. Delete a segment: Sketch toolbar -> One-by-One -> click on the item you want to delete. Edit -> Cut/Delete. Check Display Dimensions On/Off button, Constraint On/Off button, Display grid On/Off button, and Display Vertices On/Off button.

2. Sketch 2 Line Tangent – Create Lines tangent to 2 entities: Sketch toolbar -> Line Tangent Using left mouse key to pick 2 entities. Constraints: ‘ T ’ means tangent. Select single item: Sketch Toolbar -> One-by-One -> Click on the item you want to select. Select multiple items: Sketch Toolbar -> One-by-One -> Press down Ctrl -> Click on the items you want to select one-by-one. Keep one item selected and release others from multiple selected items: Press down Shift -> Click on the item you want to keep.

3. Sketch 3 Mouse highlight: From left to right: Select all the items and partial item included in the area. From right to left: Only select the items which are completely included. Select all: Edit -> Select -> All.

4. Sketch 4 Centerline: Usages: (1) represents the center location of a circle; (2) used for mirror copy; (3) used to display dimensions. Sketch toolbar -> Centerline (Create 2 point Centerlines) Mirror Copy: Click on the item that needs to be copied, click on Mirror button (Sketch toolbar), then choose the centerline. Rectangle: Sketch toolbar -> Rectangle Using left mouse key to determine two corner points.

5. Sketch 5 Center and point - Create circle by picking the center and a point on the circle: Sketch toolbar -> Center and Point Using left mouse key to pick the center and a point on the circle. By default the diameter is shown. How to show radius: Click once on the circle and click the middle mouse key outside of the circle. How to show diameter: Click twice on the circle and click the middle mouse key outside of the circle. Concentric - Create concentric circle: Sketch toolbar -> Concentric Click on a circle, use left mouse key to generate concentric circle/circles. Press down middle mouse key to stop.

6. Sketch 6 3 point - Create circle by picking its 3 points: Sketch toolbar -> 3 Point Using left mouse key to pick any 3 points to generate a circle. 3 Tangent - Create a circle tangent to 3 points: Sketch toolbar -> 3 Tangent Generate a circle by using left mouse key to pick three curves/straight lines.

7. Sketch 7 Ellipse - Create a full ellipse: Sketch toolbar -> Ellipse Generate a ellipse by using left mouse key to pick the center position and one point on the ellipse. Radii in X & Y directions can be changed. 3-point/Tangent End - Create an arc by 3 points or tangent to an entity at its endpoint: Sketch toolbar -> 3-Point/Tangent End Using left mouse key to pick starting & ending points, then middle point on the arc. How to show the length of the arc: Click on Normal, using left mouse key to pick starting & ending points, then middle point on the arc, then press middle mouse key outside.

8. Sketch 8 Concentric - Create concentric arc: Sketch toolbar -> Concentric (arc) Click on an arc, use left mouse key to pick starting & ending points of the arc. Press down middle mouse key to stop. Center and ends - Create an arc by picking its center and endpoints: Sketch toolbar -> Center and Ends Using left mouse key to pick the center and two endpoint on the arc. Press down middle mouse key to stop.

9. Sketch 9 3 Tangent - Create an arc tangent to 3 entities: Sketch toolbar -> 3 Tangent (arc) Generate an arc, use left mouse key to pick 3 entities. Conic - Create a conic arc: Sketch toolbar -> Conic Using left mouse key to pick two points, and then the conic peak.

10. Exercise Familiar with those commonly-used sketch tools. Familiar with those constraints appeared. Select single item and multiple items using left mouse key. Use left-to-right highlight to select multiple items and right-to-left highlight to select multiple items, and see what is the difference. Know how to keep one item selected and release others from multiple selected items. Draw following sketches using sketch tools.

11. Sketch Exercise 1

12. Sketch Exercise 2