Application
This unit applies to the manufacture of jewellery master pattern(s) for jewellery reproduction, mainly by the hand held application of processes. Work would be mainly autonomous in a jewellery manufacturing environment. Understanding the principles of casting/moulding/shrinkage and wax injection is required. General production processes used to finish the reproductions must be understood. Competency in this unit cannot be fully met without appropriate comparison to the finished production item. Where machining is required as a major component of this manufacturing concept, then unit MEM07005C (Perform general machining) should be selected. The equipment used may include hand and power tools, lathes and non-CNC machines. Where component(s) require preparation or manufacture by NC/CNC/CAD/CAM as an integral part of this process by the person working autonomously, the relevant competencies should be accessed. If electro-deposition and/or electro-forming of metal is required, MEM07024B (Operate and monitor machine/process) or Unit MEM08003C (Perform electroplating operations) should also be selected. This unit has dual status and is to be regarded as both a Specialisation band A unit and Specialisation band B unit for progression to C5 (AQF level V). Band: A Unit Weight: 4 |
Prerequisites
Elements and Performance Criteria
ELEMENT | PERFORMANCE CRITERIA |
1. Determine master pattern requirements | 1.1. Specifications and drawings are interpreted for required pattern information. 1.2. Technique/process to achieve suitable quality finish for masters are selected. 1.3. Materials to produce given item are selected. 1.4. Tools, equipment and processes appropriate to task are selected. |
2. Produce master | 2.1. Materials are marked out and/or construction plan developed to meet specifications/stages of process. 2.2. Pattern material(s) are prepared. 2.3. Master is produced. |
3. Finish and inspect work | 3.1. Item is checked for compliance with specifications. 3.2. Weights and measurements are recorded. 3.3. Sprue material is fitted if necessary. 3.4. Final finish is applied, where appropriate, and item is stored. 3.5. Master is evaluated and compared to production sample. |
Required Skills
Required skills |
Look for evidence that confirms skills in: reading, interpreting and following information on written job instructions, specifications, standard operating procedures, charts, lists, drawings and other applicable reference documents following procedures planning and sequencing operations checking and clarifying task-related information entering information onto proformas and other workplace forms checking for conformance to specifications using precision measurement equipment measuring items to specified tolerances undertaking numerical operations and calculations/formulae within the scope of this unit following verbal instructions orally reporting information collecting and assessing data for practical applications selecting methods, materials and tools/equipment selecting and using tools/equipment/processes applying a working knowledge of metals and materials pre-forming/producing item/components to size and shape checking product for compliance to specifications and design outcomes matching product to original design concept/drawings/ specifications inspecting surface condition for pre-treatment/plating process making allowance for sequential processes recording statistical evidence positioning/securing sprue section undertake final treatments according to standard operating procedures and OH&S handling and storing products comparing/calculating design specifications |
Required knowledge |
Look for evidence that confirms knowledge of: understanding of the principles of casting, moulding, shrinkage, and wax injection location of information/specifications clarification approval processes collective information/drawings/specification/product development plans wrought, forge, machine and cast techniques and applications the appropriate properties/function of materials prerequisite working specifications/abilities/limitations of selected materials stored data on specifications and processes planning/process stages the difference between master and finished item specifications fine detail work processes levels of acceptable performance and productivity outcomes finishing processes sequential processes required for design outcomes inspection and compliance checks surface/parts/areas appropriate for post production processes for setting/electroplating/enamelling, and for the subsequent processes of moulding and waxing reasons for the recording of specifications appropriate measuring devices and recording methods handling and design needs associated with sprue placement appropriate knowledge of wax injection, moulding, casting, molten metal flow/solidification procedures for final treatment/safe handling/storage of item relevancy of calculations/specifications appropriate techniques, tools and equipment to measure machined components hazards and control measures, including housekeeping use and application of personal protective equipment safe work practices and procedures reasons tools, equipment, resources and reference material are stored in accordance with OH&S and standard operating procedures |
Evidence Required
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package. | |
Overview of assessment | A person who demonstrates competency in this unit must be able to produce jewellery metal masters. Competency in this unit cannot be claimed until all prerequisites have been satisfied. |
Critical aspects for assessment and evidence required to demonstrate competency in this unit | Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts. |
Context of and specific resources for assessment | This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate. This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with producing jewellery metal masters or other units requiring the exercise of the skills and knowledge covered by this unit. |
Method of assessment | Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials. |
Guidance information for assessment |
Range Statement
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included. | |
Technique/process | High polish |
Materials | Jewellery alloys and/or their base metals |
Sectors
Unit sector |
Competency Field
Jewellery and horological |
Employability Skills
This unit contains employability skills. |
Licensing Information
Not Applicable