a container that you pour a liquid or soft substance into which then becomes solid in same shapes as container, allowing many of the same product to be made identically
Explain the process of offset lithography printing
- aluminiumprinting plates are chemically treated so that the printed area attracts grease and repels water and the non-printing area attracts water and repels grease
- one printing plate is produced for each of the four colours (cyan, yellow, black, magenta)
- the paper passes through each of the coloured printing plates in turn
What is meant by the term tolerance when discussing quality control?
a way of checking whether a component is within an acceptable range of measurements, it is normally given as an upper (+) and lower (-) measurement (such as +/-2mm for a product)