Keep good balance and proper footing at all times. Be aware of potential hazards in your work area. Don't overlook the hazards and workspace requirements of others working nearby. When operating power tools in a strange environment check for flammable liquids, combustible materials and other hazards before beginning work. Keep out of the way of things that may be thrown by machinery.
Some machines produce large amounts of debris.
Debris not caught by the machine's dust collection system may be propelled out of the machine in a particular direction and distract or obstruct the vision of the operator. Some machines may also eject stock material under some circumstances. Table saws and wood jointers for example will eject wood stock in the direction of the rotation of the blade if the material is improperly feed. These machines should be operated from one side, minimizing any possible hazards. Chips and debris should be cleaned with a brush and not with compressed air or by hand.