Unit of competency Outline

Date retreived
22/07/2026 5:51 AM AWST

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Design and construct moulds for fibrous plaster products

Design and construct moulds for fibrous plaster products

Unit of competency
National Code
PMC553070
State Code
BAH18
TGA Status
Deleted
DTWD Status
Transition (Deleted)
Current Release Number
1.00
Current Release Date
22/06/2016
View on TGA
State Implementation and Classification
Approved Date
05/08/2016
Field of Education
040317 - Plastering
Original Release Date
05/08/2016
Nominal Hours
40
Description
This unit of competency covers the skills and knowledge required to design and construct moulds for fibrous plaster products. This unit of competency applies to plaster modellers, leading hands, supervisors or those in similar roles who are required to design or determine the product shape, create an image of the design, convert it to the negatively shaped mould cavity, hand carve the mould impression, make adjustments to remedy faults and non-conformity and solve problems within area of responsibility.This unit of competency applies to a plaster modeller demonstrating theoretical and technical knowledge and well developed skills in situations that require some discretion and judgement. The plaster modeller may work alone or as a member of a team or group and will work in liaison with other shift team members, team leader and supervisor, as appropriate.No licensing, legislative or certification requirements apply to this unit at the time of publication.
Notes
Elements and Performance Criteria
1 Develop mould design
  • 1.1 Establish original product concept or design from drawings, originals or consultation with the customer
  • 1.2 Sketch out product prototype design and establish product sizes making appropriate allowance for material shrinkage
  • 1.3 Identify areas where undercuts, cutbacks or other special features are required
  • 1.4 Determine parting line
  • 1.5 Determine material from which mould is to be made
2 Select mould material and prepare for mould production
  • 2.1 Set up material for mould making, ensuring that the mould can be handled or moved without damage
  • 2.2 Establish datum point and mark out design dimensions using geometric and lineal calculations
  • 2.3 Determine correct cavity depths and contours
  • 2.4 Ensure there is adequate ventilation and light to facilitate an appropriate work environment
3 Produce working mould
  • 3.1 Fit appropriate protective equipment to prevent inhalation or irritation of by-products of the mould making process
  • 3.2 Use appropriate tools to carve out mould cavity and detail
  • 3.3 Accurately follow the design detail to produce a mould cavity to specification
  • 3.4 Avoid undercuts which will prevent removal of the plaster product from the mould
  • 3.5 Ensure appropriate degrees of taper are provided to facilitate product removal
  • 3.6 Carve reliefs according to design and remove debris as the work proceeds
4 Complete mould
  • 4.1 Clean down completed mould and clean up work area
  • 4.2 Inspect mould surface for defects or irregularities
  • 4.3 Compare design details with mould cavity to confirm accuracy of translation
  • 4.4 Coat mould surface to preserve finish and allow to dry
5 Produce product prototype
  • 5.1 Apply slipping agent to mould surface
  • 5.2 Prepare and insert anchors or ties
  • 5.3 Prepare plaster mixture and appropriate amount of glass fibre
  • 5.4 Cast plaster mix and fibre into mould cavity, strike off and allow to set
  • 5.5 Remove prototype from mould or mould from prototype
  • 5.6 Check prototype for dimensional and detail accuracy
  • 5.7 Compare prototype and mould to identify any faults or mould inaccuracies
  • 5.8 Adjust or dress mould to remove imperfections and clean mould surface
  • 5.9 Cast second prototype and recheck product and mould
  • 5.10 Clean up mould and mark in accordance with organisation identification practice
6 Control hazards
  • 6.1 Identify hazards in modelling work area
  • 6.2 Assess the risks arising from those hazards
  • 6.3 Implement measures to control those risks in line with procedures and duty of care
7 Respond to problems
  • 7.1 Identify possible routine and non-routine problems in the equipment or process
  • 7.2 Determine problems needing action
  • 7.3 Determine possible fault causes
  • 7.4 Rectify problem using appropriate solution within area of responsibility
  • 7.5 Report problems outside area of responsibility to designated person
No information
No information
Replaces
State Code National Code Title Type
WA966 PMC553070B Design and construct moulds for fibrous plaster products Unit of competency