You only need to do this step if your cylinder features (CYL1, CYL2, and CYL3) give collision results when you test them in the "Test for Collisions" step.
This step in the tutorial adjusts the Depth and Ending Offset values for the three cylinder features (CYL1, CYL2, CYL3). With this part and a probe of 2 mm, these features may end colliding with material near the bottom or end of the three cylinders.
From the Edit window, click on CYL1 and press F9 to open the Auto Feature dialog box for that feature. The green lines show the path the probe takes to measure the different hits in the feature.
From the bottom half of the dialog box, click the Contact Properties tab ().
Change the Depth to 3.
Change the Ending Offset to 1.
Click OK.
For CYL2, repeat the above steps and change those same values.
For CYL3, the change is different. This is because the cylinder is on the side of the part. So, instead, set the Ending Offset to 3 and the Depth to 1.
Once you are done, do the "Test for Collisions" step again to ensure there are no more collisions.
Go to the next step: "Set the Report Output and Type"