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Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

  1. Select appropriate finishing/polishing procedure
  2. Install and set up grinding and polishing devices
  3. Identify job materials
  4. Identify job surface condition
  5. Assess processing hazards associated with work piece size and shape
  6. Grind, finish, brush and/or polish job

Required Skills

Required skills

Look for evidence that confirms skills in

reading and following information on standard operating procedures

checking and clarifying taskrelated information

selecting appropriate polishingfinishing method to suit work requirements

fitting and adjusting endless belts on linishing machines

fitting and dressing grinding wheels and mops on pedestal grinders

installing and setting up polishing mops in polishing machines

producing surface finishes to specification

identifying surface imperfections

assessing processing hazards

Required knowledge

Look for evidence that confirms knowledge of

typical surface finish specifications within the scope of this unit

procedures tools and techniques for fitting and adjusting endless belts on linishing machines

procedures tools and techniques required to fit and dress grinding wheels and mops

procedures tools and techniques for installing and setting up polishing mops

characteristics of common metals alloys and nonmetals

appropriate polishing media to be used in finishingpolishing for different types of materials

effect of different types and grades of polishing media on the surface finish

finishing and polishing methodstechniques

reasons for selecting a specific methodtechnique

common surface imperfectionsdefects

surface imperfectionsdefects that can be removedrepaired by manual finishingpolishing procedures

procedures for handling components with surface imperfectionsdefects that cannot be removedrepaired

methods and techniques to check for conformance to specifications

hazards associated with the manual finishingpolishing process

personal protective clothing and equipment

safe work practices and 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 manually finishpolish materials 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 manually finishingpolishing materials 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 supervisors 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.

Finish

Brightness, texture, roughness comparison

Finishing/polishing equipment

Endless belt grinders; table linishers; pedestal grinders and polishers; felt wheels, fabric mops and brushes with underhand and overhand techniques; flexible drive appliances; buffing compounds; cutting compounds and abrasive belts

Finishing/polishing media

Solid and liquid compositions containing alumina, silicon carbide, diamond dust, tripoli, calcium oxide and iron oxides

Material

Cast iron, steel, zinc and its alloys, copper, aluminium and its alloys, bronzes, sterling silver, gold and plastics

Common surface imperfections

Pitted surface, machining lines, scale, rust

Hazards

Airborne dust inhalation, unsecured components