MEM19009 — Perform investment procedures for lost wax casting process
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What an assessment for MEM19009 must cover
35 assessable components: 3 elements (12 performance criteria), 7 performance evidence and 16 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.
Elements & performance criteria
1 Determine job requirements
- 1.1Follow standard operating procedures (SOPs)
- 1.2Comply with work health and safety (WHS) requirements at all times
- 1.3Use appropriate personal protective equipment (PPE) in accordance with SOPs
- 1.4Identify job requirements from specifications, job sheets or work instructions
2 Invest flask
- 2.1Prepare and check materials
- 2.2Select and prepare casting methods, tools and equipment
- 2.3Assemble flask for casting
- 2.4Mix investment and prepare curing stage
3 Operate ‘lost wax’ sequence and clean site
- 3.1Evacuate ‘low melt’ wax by steam process
- 3.2Position and store investment flask
- 3.3Select and apply ‘burn-out’ procedure
- 3.4Clean tools, equipment and site area
Performance evidence
- 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
- 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.
Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.
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Real, unedited Auditori output (RIIHAN201E shown), branded for a sample RTO:
Questions about assessing MEM19009
What does an assessment tool for MEM19009 need to cover?
To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MEM19009 needs to address all 35 unit components: 3 elements with 12 performance criteria, 7 performance evidence requirements, 16 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.
How does Auditori generate an assessment tool for MEM19009?
Auditori pulls the current release of MEM19009 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.
Is the first assessment tool really free?
Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MEM19009 — with no card and no subscription required. After that it's pay-as-you-go per unit.
Can I check my existing MEM19009 assessment instead of generating a new one?
Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MEM19009, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.
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