When working with aluminum, it's crucial to take several safety precautions. Always wear appropriate personal protective equipment (PPE), including safety glasses, gloves, and a dust mask to prevent inhalation of aluminum dust. Ensure good ventilation to avoid build-up of fumes, especially during welding or cutting processes. Use proper tools designed for aluminum to prevent sparks and overheating. Be aware of the fire hazard; aluminum can burn at high temperatures, so have fire extinguishers readily available. Finally, be cautious with chemicals used in aluminum processing, as they can be harmful; always follow the manufacturer's safety instructions.