1mm Blade Setup
Do not set the blades with the top blades overlapping the bottom.
Set the top and bottom blades in line with one another.
3mm Blade Setup
Do not set the blades in line with one another.
The bottom blade should be set slightly further out than the top blade.
Ensure that there is a small gap between the bottom blade and the machine head of the clipper.
Tighten the screws sufficiently to stop the blades from slipping out.
Always oil your machine thoroughly before use and have it services regularly.