The DO's and DONT's in using Hand Tools.
PLIERS:
Do not increase the handle length of pliers to gain more leverage. Use a larger pair of pliers or bolt cutters if necessary.
Do not substitute pliers for a wrench when turning bolts and nuts. Pliers cannot grip these items properly and might cause a slip and create an accident.
Never use pliers as a hammer on the handle. Such abuse is likely to result in cracks or breaks.
Cut hardened wires only with pliers designed for that purpose.
Always cut the wires in right angle. Never rock from side to side or bend wire back and forth against the cutting edges.
SCREWDRIVERS:
Never use screwdrivers as a pry bar, chisel, and punch stirrer or scraper.
Never use screwdrivers with broken or worn-out handles. Screwdrivers of these kinds should have tags to indicate that it is defective.
Never use pliers on a screwdriver for extra leverage. Only use wrench or screwdrivers specifically designed for purpose.
UTILITY KNIVES/BLADES:
Do not use dull blades because they require more force, thus are more likely to slip. Replace the blade when it starts to “tear” instead of cut.
Never leave a knife unattended with the blade exposed.
Don’t bend or apply side loads to blades by using them to open cans or loosen tight cover of containers. Blades are brittle and can snap easily.