This document is a guide to making a portable device which can be used to monitor the air, in terms of PM2.5.

These tiny particles can come from a variety of sources and could be harmful. This device will indicate when the relative number of particulates in the air is high.  It could be used to monitor the air in a workshop.

This is a 'bumper' edition, with articles covering: mobile kitchens, wall painting, power tools, D&T projects, 3D printing, food resources, drone racing, textiles careers, competitions, and some H&S updates in the 'smallprint'.

The cutting and shaping of compliant and resistant materials using machines controlled by a computer (CNC machines). Cutting / soluble oil is often used when metals are being shaped.

The heating or bonding of materials to form shapes which can then be finished to provide a 3 dimensional representation of a CAD image.