A polyester resin, dissolved in styrene, is hardened by mixing with a catalyst. The resin is often used with glass-fibre reinforcement to give glass-reinforced plastic (GRP). Small scale repair kits use similar materials but with the catalyst supplied as a paste.

This is a short guide explaining the use of a washing machine in a school and is a response to a number of helpline queries regarding the laundering of textiles in a school.

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.

Explains the relative merits of three different ways of producing printed circuit boards by etching copper-clad boards.