Look for evidence that confirms knowledge of: enamels, base metals and properties relating to enamelling, enamelling techniques, firing techniques and work holding devices, faults and common rectification methods factors for determining suitability for enamelling including available enamelling compositions, firing temperatures, metal type and properties, item construction different enamelling techniques and terms enamelling compositions and techniques and related to specific item properties and factors such as metal type/properties, item construction, firing temperature enamels and forms of availability for purchase including leaded/unleaded, opaque/transparent terms applied to various enamelling techniques use of enamel colour chart to determine suitable colours correct working procedures during the preparation of enamel powder techniques for washing and grinding enamels, when required, and reasons for doing so preparation of metal surfaces by hand cleaning, polishing/burnishing, chemical pre-treatment by acid, surface depletion methods and application to different metals hazards and safety measures relating to pre-treatment of metals and preparation of enamels/metals additional processing, including stamping, engraving, saw piercing, chasing, oxidising, roller pressing tools and equipment for processing and their uses methods of applying enamels including wet packing, dry dusting melting temperatures of metals and enamels work-holding devices visual appearance of enamel at different stages of firing process counter-enamelling techniques and reasons for doing so cleaning and lapping processes between firing different finishes and methods for achieving specific effects masking out methods final firing and polishing methods features and factors for compliance from original specifications and/or job requirements common enamelling faults/incorrect outcomes and their causes, including oxidation, staining, under/over firing actions to rectify faults using standard techniques/methods job data to be recorded procedures to record data hazards and control measures, including housekeeping use and application of personal protective equipment safe work practices and procedures |