When drilling a plastic storage cistern for pipework connections, what accessory should be used?

Using a hole saw is the preferred method for drilling a plastic storage cistern for pipework connections due to its design, which allows for clean, precise cuts in the material. Hole saws are specifically made to create larger diameter holes compared to standard drill bits, making them ideal for accommodating pipe fittings or connections. This ensures a proper fit, minimizing the risk of leaks when connecting pipes to the cistern.

A drill bit typically produces smaller holes, which may not be sufficient for the applications involving pipework. A chisel is unsuitable as it is not designed for making circular cuts and would likely damage the cistern. A jigsaw, while capable of cutting plastic, is not the best choice for creating clean, round holes required for pipe connections, as it is designed more for intricate or straight cuts rather than precise, uniform holes. Thus, the hole saw remains the most effective tool for this task.