Application

This unit of competency defines the skills and knowledge required to prepare investment flasks using manual and automatic equipment for jewellery casting procedures.

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, job sheets or work instructions in performing investment procedures for lost wax casting process

checking pre-assembled wax for security, size and weight and selecting, checking and cleaning sprue and investment materials and recording weights

calculating and weighing out proportions of investment material and water and selecting and assembling appropriate flask size

performing mixing, vibrating and vacuum procedures and operating steamer and process to evaluate ‘low melt’ wax

inspecting flasks for residue prior to burn-out, positioning, storing flask and selecting appropriate burn-out procedure and equipment, including inspecting and adjusting oven or kiln cavity

cleaning investment equipment of residue and disposing in accordance with procedures.

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)

procedures for checking built wax

casting methods and equipment and processes

sprue and investment tools, equipment and materials

techniques for sprue or tree styles and selection and application of the processes

selection of flask and components for specific casting processes

procedures and computations for mixing proportions, time calculations, volume and weights

appropriate gloss off and set time allowance prior to base removal

requirements for curing and set stage

sequence and values for time, temperature and cam settings

steamer process

suitability of flask and investment for burn-out

sequence, procedures, adjustments for variables

procedures for storage and positioning

procedures for cleaning, storage and removal of materials and reasons for housekeeping functions

recording procedures.

Assessment Conditions

Assessors must:

have vocational competency in performing investment procedures for lost wax casting process 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': 'MEM11011', 'title': 'Undertake manual handling'}
• {'code': 'MEM12024', 'title': 'Perform computations'}
• {'code': 'MEM13015', 'title': 'Work safely and effectively in manufacturing and engineering'}
• {'code': 'MEM16006', 'title': 'Organise and communicate information'}
• {'code': 'MEM18001', 'title': 'Use hand tools'}
• {'code': 'MEM07024', 'title': 'Operate and monitor machine and process'}
• {'code': 'MEM13003', 'title': 'Work safely with industrial chemicals and materials'}

Parent Qualifications

• MEM40119 — Certificate IV in Engineering
  MEM

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