Elements and Performance Criteria

The range statement provides information about the context in which the unit of competency is carried out. The variables and scope cater for different work requirements, work practices and knowledge between States, Territories and the Commonwealth, and between organisations and workplaces. The range statement relates to the unit as a whole and provides a focus for assessment. Text in italics in the performance criteria is explained here.
The following variables may be present and may include, but are not limited to, the examples listed under the scope. All work is undertaken to relevant legislative requirements, where applicable
Variable
Scope
Operations
Parallel cutting, slotting, planing, drilling, knurling, cutting flats, non-precision surface grinding operations etc.
Material
Ferrous and non ferrous
Tools
Cutting tools and accessories, measuring devices
Marking out techniques
Basic marking out techniques using calipers, steel rules, dividers, scribers etc.
Machining parameters
Speeds, feeds, stops, coolant and cutting lubricants etc.
Machines include lathes, mills, planers, shapers, radial arm drills, slotters, surface grinder etc.
Maintenance and adjustments
Slide and collar adjustment, cleaning and lubrication

The evidence guide specifies the evidence required to demonstrate achievement in the unit of competency as a whole. It must be read in conjunction with the unit descriptor, performance criteria, range statement and the assessment guidelines for the Metal and Engineering Training Package
Overview of assessment requirements
A person who demonstrates competency in this unit must be able to perform general machining. Competency in this unit cannot be claimed until all prerequisites have been satisfied.
Context of 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.
Interdependent assessment
This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with performing general machining 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.
Consistency of performance
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.
Required skills
Look for evidence that confirms skills in:
reading and interpreting routine information on written job instructions, specifications and standard operating procedures. May include drawings
following oral instruction
planning and sequencing operations
preparing operational work plan
sharpening and shaping cutting tools
identifying worn or damaged cutting tools
correct mounting and positioning of cutting tools
basic marking out of materials
setting machining parameters to achieve the job requirements and maximise tool life
using appropriate and sufficient clamping/mounting of the work piece
using coolant/lubricant correctly
checking for conformance to specifications
measuring to specified tolerances and dimensions
Required knowledge
Look for evidence that confirms knowledge of:
reasons for selecting the chosen sequence of operations
methods of work holding
basic marking out techniques including datum points/lines etc.
geometry of cutting tools for a range of materials and applications
benefits of using correctly sharpened cutting tools
machine operation
selection of feeds and speeds to suit a range of materials and operations within the scope of this unit
correct methods of mounting a variety of cutting tools
safety issues with regard to correct clamping, guards, shields etc.
tolerances, limits of size
situations indicating the need for machine adjustment, lubrication and cleaning
techniques, tools and equipment to measure materials and machined components
use and application of personal protective equipment
safe work practices and procedures
hazards and control measures associated with general machining