This MRAT explains the controls that need to be put in place when watering plants in a gardening activity.

Additive manufacturing is a popular activity in schools, with the advent of relatively cheap 3D printers.

This project covers the use of a desktop 3D printer, using PLA filament, extruded through a heated nozzle.

The same safety considerations should be borne in mind when using other 3D printers, or rapid prototyping machines.

The Health and Safety Executive (HSE) was involved with CLEAPSS in producing this guidance. HSE endorses the guidance, as it follows a sensible and proportionate approach to managing health and safety. It explains how to manage the risks presented by FFF printers.

Thermoplastic materials are joined using a jet of hot air to melt and fuse the plastics material. A filler rod of the same material may be used to reinforce the joint.