1. In the top surface circles for holding individual pencils can be placed. "create circle"
2. Choose the Create Circle tool
3. Drag out a small circle towards the front left of the top face
4. Choose the Constrain Size tool
5. Select the edge of a circle and drag out the constraint dimension
6. Double click on the constraint value of the circle
7. In the Properties dialogue box enter the Radius to 6mm
8. Choose the Select Lines tool to highlight the circle
9. From the Edit menu choose Duplicate
10. In the dialogue box enter X Direction number 4, Spacing 20mm and Y Direction 2, Spacing 20mm. (This will produce an array of eight holes spaces at 20mm between centres)
11. From the View menu choose Isometric
12. Choose the Extrude Profile tool
13. In the Extrude dialogue box check Below workplane, Subtract material, and Distance 35mm.
14. Select OK.

1. From the Workplane menu select New Sketch (This will give you a new drawing surface on the same plane)
2. Draw a suitably sized rectangle and a circle on the top surface
3. Use the Constrain Separation tool to size the rectangle (45 x 40mm)
4. Use the Constrain Size tool to size the circle (15mm)
5. From the View menu choose Isometric
6. Choose the Extrude Profile tool
7. In the Extrude dialogue box check Below workplane, Subtract material, and set the Distance to a suitable depth (e.g. 20mm)

1. From the Workplane menu select New Sketch (This will give you a new drawing surface on the same plane)
2. From the Part toolbar select the Create Rectangle tool
3. From the View menu choose Plan
4. Drag out a rectangle going from one end of the block to the other
5. Use the Constrain Separation tool to size the rectangle if necesssary
6. From the View menu choose Isometric
7. Choose the Extrude Profile tool
8. In the Extrude dialogue box check Below workplane, Subtract material, and Distance 35mm.
9. Select OK.

Fig 9.

1. Choose the Select Faces tool
2. Select the top surface of the block (edge turns red)
3. Choose Chamfer Edges tool
4. In the Chamfer Edges dialogue box enter the Setback size to 2mm
5. Alternatively selected edges can be chosen using the Select Edges tool and holding down the Shift key whilst selecting
6. From the File menu choose Save and save as Block