This is a new document explaining the need for controlling the fumes generated by welding steel.

It gives some solutions to managing the problem of extraction.

Tee shirt printing is a quick and easy way of producing a professional standard of outcome that combines creative design work and a practical solution.

The design is generated using a computer package and then printed and applied to the shirt using heat.

Screen printing or block printing could also be used to apply the design to the fabric.

The corrosion resistance of iron and steel can be improved by treatment with sulfuric and phosphoric acids. Other metals are also affected through the introduction of chemicals.

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