Application

This unit of competency defines the skills and knowledge required to perform jewellery metal casting using the ‘lost wax’ method of investment casting.

No licensing, legislative or certification requirements apply to this unit at the time of publication.

What You'll Learn

Assessment Requirements

Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria on at least two (2) occasions and include:

following work instructions, standard operating procedures (SOPs) and safe work practices

identifying and interpreting specifications and drawings for performing jewellery metal casting

undertaking numerical operations and calculations associated with performing jewellery metal castings

identifying and weighing metals and their alloys appropriate to the correct wax-to-metal ratios

setting up, checking and operating equipment

heating metals and alloys and maintaining furnace temperatures to achieve jewellery metal casting temperature

applying safe casting procedures working within heating timeframe constraints and tapping molten metal, making allowances for adequate solidification time

cleaning, storing and disposing of casting materials and consumables in accordance with SOPs.

Knowledge Evidence

Evidence required to demonstrate the required knowledge for this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include knowledge of:

safe work practices and procedures and use of personal protective equipment (PPE)

identification of precious metals and alloys

properties of jewellery metals in relation to casting

calculations for proportions and quantities of alloys

data recording procedures

consequences of poor work practices

equipment preparation and operating procedures

burn-out cycles and testing procedures for heat register or control device

procedures for checking and maintaining inert gas supply and delivery seals and vacuum systems

melting points of various metals and alloys

furnace start-up and shutdown procedures.

Assessment Conditions

Assessors must:

have vocational competency in performing jewellery metal casting at least to the level being assessed with relevant industry knowledge and experience

satisfy the assessor requirements in the Standards for Registered Training Organisations 2015 or its replacement and comply with the National Vocational Education and Training Regulator Act 2011, its replacement or equivalent legislation covering VET regulation in a non-referring state/territory as the case requires

Where possible assessment must occur in operational workplace situations. Where this is not possible or where personal safety or environmental damage are limiting factors, assessment must occur in a sufficiently rigorous simulated environment that reflects realistic operational workplace conditions. This must cover all aspects of workplace performance, including environment, task skills, task management skills, contingency management skills and job role environment skills

Conditions for assessment must include access to all tools, equipment, materials and documentation required, including relevant workplace procedures, product and manufacturing specifications

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Foundation Skills

• text: This section describes those required skills (reading, writing, oral communication and numeracy) that are essential to workplace performance in this unit of competency. Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

Prerequisite Units

• {'code': 'MEM13004', 'title': 'Work safely with molten metals/glass'}
• {'code': 'MEM13015', 'title': 'Work safely and effectively in manufacturing and engineering'}
• {'code': 'MEM16006', 'title': 'Organise and communicate information'}

Parent Qualifications

• MEM40119 — Certificate IV in Engineering
  MEM

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