Hand sewing, pinning for machine sewing and unpicking stitching.

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.

The design, construction and maintenance of electrical installations, including those which will be connected to the mains supply.

Use of solvent-based, repositionable adhesives.