Application
This unit applies to jewellery and object designers who make items according to design specifications, where casting and associated techniques are required for the production of jewellery and 3D objects.
Band A
Unit Weight 4
Prerequisites
Not applicable.
Elements and Performance Criteria
1 | Examine design brief and prepare for work | 1.1 | Review design brief and all documentation to confirm specifications |
1.2 | Determine type of casting techniques and resources appropriate for design | ||
1.3 | Develop work plan for production | ||
1.4 | Identify and implement occupational health and safety (OHS) and environmental requirements for carrying out the tasks and for the work area | ||
2 | Produce wax models | 2.1 | Determine process requirements for production of wax model |
2.2 | Identify required equipment and prepare for use | ||
2.3 | Cut materials to required dimensions using appropriate tools | ||
2.4 | Sculpt wax model to specifications and minimise imperfections | ||
2.5 | Apply surface finishes as required | ||
3 | Produce moulds | 3.1 | Select appropriate moulding material for style of master, and prepare, pack, dry and burn out correctly |
3.2 | Carry out wax injection of moulds using appropriate tools, materials and processes, if required | ||
3.3 | Vulcanise/cure rubber correctly, if appropriate | ||
3.4 | Release master pattern correctly using appropriate tools | ||
4 | Cast metals for jewellery and object designs | 4.1 | Establish casting requirements from source documentation and/or appropriate personnel, as required |
4.2 | Select metals and alloys in appropriate proportions and weigh correctly and in correct wax-to-metal ratios | ||
4.3 | Prepare casting equipment according to established enterprise procedures | ||
4.4 | Carry out pre-heating/glazing, if applicable | ||
4.5 | Cast jewellery item or object using correct procedures with respect to maintaining temperature, applying protective coating, if required, and handling of hot molten metal | ||
4.6 | Allow for adequate solidification time | ||
4.7 | Clean up work area and equipment and dispose of waste according to environmental requirements |
Required Skills
Required knowledge includes: design casting process properties of metals and alloys making the master model moulding making the wax pattern investment burn out melting casting removing investment cutting finishing workshop procedures casting defects minimising casting defects Required skills include: selecting appropriate quality materials for the production of wax model producing wax models to given specifications and minimising imperfections performing wax injection of mould, where applicable correctly vulcanising and curing rubber moulds where applicable using molten metal safely casting jewellery and objects using different techniques and materials applying appropriate finishing techniques to cast object |
Evidence Required
Overview of assessment | A person who demonstrates competency in this unit must be able to apply casting techniques required in the production of jewellery and object designs. |
Critical aspects for assessment and evidence required to demonstrate competency in this unit | Assessors must be satisfied that the candidate can competently and consistently: implement OHS workplace procedures and practices, including the use of risk control measures demonstrate the application of jewellery casting techniques on more than one occasion and in different contexts. This includes: producing wax models performing investment procedures producing moulds for lost wax, cuttlefish or sand casting casting jewellery objects. |
Context of and specific resources for assessment | Assessment may occur on the job or in an appropriately simulated environment. Access is required to real or appropriately simulated situations, including work areas, materials and equipment, and to information on workplace practices and OHS practices. Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate ethnicity, age, gender, demographics and disability. Access must be provided to appropriate learning and/or assessment support when required. Where applicable, physical resources should include equipment modified for people with disabilities. |
Method of assessment | Assessment must satisfy the endorsed Assessment Guidelines of the MEM05 Metal and Engineering Training Package. Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of underpinning knowledge. Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure its correct interpretation and application. Assessment may be applied under project-related conditions (real or simulated) and require evidence of process. Assessment must confirm a reasonable inference that competency is able not only to be satisfied under the particular circumstance, but is able to be transferred to other circumstances. Assessment may be in conjunction with assessment of other units of competency where required. |
Guidance information for assessment | Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed. |
Range Statement
OHS requirements | OHS requirements may include: legislation protective equipment material safety management systems hazardous substances and dangerous goods code local safe operation procedures awards provisions |
Environmental requirements | Environmental requirements may relate to: liquid waste solid waste gas, fumes, vapour, smoke emissions, including fugitive emissions, and dust excessive energy and water use excessive noise |
Appropriate personnel | Appropriate personnel may include: supervisor foreman manager trainer mentor teacher team member client |
Enterprise procedures | Enterprise procedures may include: the use of tools and equipment instructions, including job sheets, cutting lists, plans, drawings and designs reporting and communication manufacturer specifications operational procedures |
Surface finishes | Surface finishes may include: fine emery shellite |
Casting methods | Casting methods may include: cuttlefish centrifugal vacuum casting delft clay |
Wax injection | Wax injection may include: primarily to organic/synthetic wax injection, but may include resin and plastic materials injected under pressure for investment and burn out aspects within ‘lost wax’ casting procedures |
Casting | Casting may include: primarily by the ‘lost wax’ method of investment casting, but may include cuttlebone and sand processes as extensions |
Metals and alloys | Metals and alloys may include: gold platinum palladium silver copper pewter and their alloys |
Sectors
Jewellery and horological
Employability Skills
This unit contains employability skills.
Licensing Information
Not applicable.