Initial Setup: Before we start, please ensure that you grid settings are as follows:

• Major Grid spacing: 100mm

• Minor Subdivisions: 10

To change these at any time you can go to the 'Grids and Snaps' tool on the bottom tool bar, then 'Grid Settings'.

Step 1: Press the L key on your keyboard to enter the LINE command.

Select the X Y plane (the side piece of paper as shown).

Start a new line drawing starting where the red and green lines overlap.

Create a horizontal line that extends along the center (red) line. Enter a dimension of 20mm. Press Escape to exit the line tool.

Create a vertical line that extends along the center (green) line. Enter a dimension of 20mm. Press Escape to exit the line tool.

Join the two lines together with a new diagonal line.

Press Enter to finish the sketch.

Step 2: Click on the green tick in the top right corner of the screen to 'finish sketch'.

Now select the home button above the view cube > This will change your view to isometric.

Step 3: Press the E key on your keyboard to enter the EXTRUDE command.

Select the sketch created earlier and pull these outwards, or simply enter the dimension of 40mm in the dimension box.

Step 4: From the top menu, select the SHELL tool.

Select the front face of the object and enter a dimension of 2mm.

Step 5: Select the CONSTRUCT drop-down menu and then select MIDPLANE.

Select the one end of the shape.

Select the ORBIT tool from the navigation menu at the bottom of the page.

Left-click and hold the button down anywhere on the screen. Move your cursor or trackpad to spin the model around. Press escape to exit the orbit tool.

Select the other end of the shape.

Press enter to complete the midplane.

Step 6: Press the L key on your keyboard to enter the LINE command.

Select the midplane you created.

Trace the outline of the triangle.

Press Enter to finish the sketch.

Step 7: Press the E key on your keyboard to enter the EXTRUDE command.

Select the midplane sketch profile created earlier.

From the extrude window, select 'Direction: Symmetric'

From the extrude window, select 'Operation: Join'

Enter a dimension of 1 mm and press OK to confirm.

Step 8: Press the C key on your keyboard to create a CIRCLE from a center point.

Select the center point where the grid lines overlap and drag a circle outwards.

First circle: The first circle size should be exactly 3.5 mm. Press Enter to complete this circle.

Again, press the C key on your keyboard to create a CIRCLE from a center point.

Select the second center point where the grid lines overlap and drag a circle outwards.

Second circle: The second circle size should be exactly 3.5 mm. Press Enter.

Step 9: Click on the green tick in the top right corner of the screen to 'finish sketch'.

Now select the home button above the view cube > This will change your view to isometric.

Step 10: Repeat step 8 on the back face of the screw block.

Step 11: Press the E key on your keyboard to enter the EXTRUDE command.

Select the circle sketches created earlier and pull these backwards, or simply enter the dimension of -2mm in the dimension box.

Step 12: From the top menu, select the Modify drop-down menu and select the chamfer option.

Carefully select all 4 circle edges.

Enter a dimension of 1 mm and press ENTER to confirm.

Step 6: Press the A key on your keyboard to enter the APPEARANCE command.

Expand the 'Plastics' tab > Select the ABS (white) material from the list and drag this directly onto the model.