Fig. 4. The Workplane browser expanded

1. The holes are on the workplane called ‘axles’. To adjust the size of the holes, activate the Workplane browser from the dropdown menu. Expand the ‘axles’ plane by placing the mouse arrow over the + to the left and clicking once with the left mouse button.

2. Place the mouse arrow over the holes sketch in the Workplanes browser and press the right mouse button once. The following options will appear.

3. With the left mouse button select the Activate sketch option. In the design window the sketch from which the holes were created will now be active.
   (If you do not get the menu shown in fig. 5 deselect the option by selecting another and try again and make sure you are using the right mouse button and not the left)

4. Choose the Select Constraints tool from the tool bar on the right and select the radius of the hole by double clicking with the left mouse button. In the dialogue box that pops up change the radius from 3.25mm to 3.5mm and click on OK.

5. To update the design, place the mouse pointer over the Update icon on the menubar. The lower one should be shining green, and click the left mouse button once to update the design. As the change is very small you may not be able to see the difference without examining the design in greater detail.

   You might like to examine the design in more detail and make sure that the hole is now not too close to the edge of the block. If you think it is you could adjust the distance of the centre line from the lower surface of the block.