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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. Determine job requirements
   • Drawings, instructions and specifications are interpreted and understood.
   • Appropriate material is selected to specifications.
   • Moulding, cast techniques and foundry processes are applied in determining the type of pattern required.
2. Lay out pattern
   • Pattern parameters are calculated.
   • Pattern is laid out showing tapers, machining allowances, core prints and method of construction etc. to specification.
   • Jigs and fixtures are developed and manufactured to aid the manufacture of the pattern form as required.
3. Manufacture pattern
   • Materials are marked out and construction is developed to meet specifications.
   • Pattern or pattern component parts are produced to size and shape and checked for compliance with specifications using acceptable wood pattern making techniques, procedures and utilising appropriate hand and hand held power tools.
   • Pattern component parts are joined or fixed as required, according to specifications, using acceptable pattern making techniques and procedures.
   • Pattern is correctly marked, colour-coded and/or tagged in compliance with specifications or standard operating procedures.

Required Skills

Required skills

Look for evidence that confirms skills in determining job requirements from written instructions standard operating procedures sketches drawings and other applicable reference documents planning and sequencing operations checking and clarifying taskrelated information selecting appropriate materials to suit the mouldingcasting techniques and foundry process laying out the patterncore boxes constructing patternscore boxes joining and fixing component parts checking patterns calculating contraction ratespitchproportionsprofiles undertaking relevant engineering calculations

Required knowledge

Look for evidence that confirms knowledge of timber epoxy resin and composite product knowledge including features characteristics and applications moulding and casting techniques for cast gears conveyor screws and marine propellers tooling required for castingmoulding methoding techniques the use and application of jigs and fixtures methods of construction techniques tools and equipment to measure mark outampproduce gear conveyor screwamppropeller patterns mathematical calculations and formulae required to manufacture patternscore boxes contraction taper pitch profiles clearances machining allowances identification coding and numbering pattern checking techniques mouldability ie surface finish face taper convex or concave perspectives undercuts etc use and application of personal protective equipment safe work practices and procedures hazards and control measures associated with developing and manufacturing gear conveyor screw and propeller patterns

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 develop and manufacture gear conveyor screw and propeller patterns 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 manufacturing gear conveyor screw and propeller patterns 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

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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.
Material	Hardwood, softwood, epoxy resins, composites
Pattern parameters	Pitch circles, pressure angles, tooth form, left and right hand flight helix, pitch axial dimensions, angles, tapers, clearances, contraction allowances appropriate to developing various types of gear, conveyor and propeller forms
Calculated	The determination of contraction rates, pitch, proportions, profiles as well as general engineering calculations

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