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

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 andor 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 MEM Metal and Engineering Training Package

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 projectrelated 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

OHS requirements

Environmental requirements

Appropriate personnel

Enterprise procedures

Surface finishes

Casting methods

Wax injection

Casting

Metals and alloys