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Evidence Guide: MEM19012B - Produce jewellery wax model

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEM19012B - Produce jewellery wax model

What evidence can you provide to prove your understanding of each of the following citeria?

Determine master requirements

  1. Customer specifications are identified.
Customer specifications are identified.

Completed
Date:

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Prepare materials for production of wax model

  1. Appropriate waxes are selected.
  2. Stock materials are cut to appropriate length.
  3. Appropriate tools are selected and used.
Appropriate waxes are selected.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Stock materials are cut to appropriate length.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Appropriate tools are selected and used.

Completed
Date:

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Produce wax models

  1. Material use and production time are optimised.
  2. Wax is sculpted to specifications.
Material use and production time are optimised.

Completed
Date:

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Wax is sculpted to specifications.

Completed
Date:

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Finish wax models

  1. Imperfections in final wax model are minimised.
  2. Surface finishes are applied.
Imperfections in final wax model are minimised.

Completed
Date:

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Surface finishes are applied.

Completed
Date:

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Assess suitability of final wax product

  1. Product is inspected for compliance with specifications.
  2. Final product is modified as necessary.
Product is inspected for compliance with specifications.

Completed
Date:

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Final product is modified as necessary.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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 a jewellery wax model. 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 a jewellery wax model 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

Required Skills and Knowledge

Required skills

Look for evidence that confirms skills in:

clarifying customer specifications

selecting appropriate method for construction of wax model for the supplied specifications

selecting wax to suit construction method and required finish

roughing out shapes with minimal wastage, effort/time in final finishing

fusing joints to achieve optimum strength and quality

applying texture finishing, high polishes, etc.

using protective safety equipment

inspecting product for correct tolerances, allowance for casting shrinkage and finishing processes

modifying original product to meet required tolerances and finishes

reading and interpreting routine information on written job instructions, specifications and standard operating procedures. May include drawings

using measurement skills needed to meet the requirements of this unit

entering routine and familiar information onto proformas and standard workplace forms

planning, sequencing operations

Required knowledge

Look for evidence that confirms knowledge of:

factors affecting construction of wax model, including type of wax, hand tools, method of construction, final finish, weight of finished product

variations in end product and the relationship with wax types

methods to be used to produce the outcome requirements/specifications and minimise waste

tools for preparing and producing wax for specific wax types and constructions

importance of minimising material wastage and time taken during roughing/finishing

appropriate key features/datum points

purpose/requirements for selected surface finish

evaluation of product by weight formulation

effects of toxic fumes of melting wax

effects of casting shrinkage and finishing processes

hazards and control measures, including housekeeping

use and application of personal protective equipment

safe work practices and procedures

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.

Materials

Materials may include those of different colours/hardness/properties

Tools

Electric and hand held tools, e.g. heat irons, wax guns, saws, carving tools, wax files, flaming torch

Surface finishes

Fine emery, Shellite