Buying guides

• How to choose a generator — Work out the size you need, inverter or conventional, petrol or diesel, and what to check before you buy a portable generator.
• Drill vs hammer drill vs rotary hammer: which do you need? — A simple comparison of a drill, a hammer drill and an SDS rotary hammer, and which one suits wood, metal, brick and concrete.
• How to choose an angle grinder and the right disc — Disc size, power, and the difference between cutting, grinding and flap discs — plus the safety basics for using an angle grinder.