Finishes and Finishing · JHS3 Career Technology

Lesson notes

Learning Objectives

Indicator: B9.3.5.1.1 - Demonstrate the techniques of applying finishes to resistant materials

By the end of the lesson, learners can:

Identify at least four finishes and the corresponding tools used for finishing resistant materials such as wood, metal and walls.
Select the correct surface preparation material (glass paper, emery cloth, filler) for wood, metal and wall surfaces respectively.
Prepare a given surface to be finished by sanding or filling it to the required standard.
Apply two coats of finish to a prepared surface, mixing lacquer with thinner in the correct proportion, and allowing proper drying time between coats.
Wash and care for finishing tools after use, using thinner for lacquer brushes and water for emulsion paint brushes.

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Curriculum details

Strand: Tools, Equipment and Processes (Strand 3)
Sub-strand: Finishes and Finishing (3.5)
Content standard: B9.3.5.1 - Demonstrate understanding of application of finishes
Indicator: B9.3.5.1.1 - Demonstrate the techniques of applying finishes to resistant materials
Suggested placement: Term 2, Week 6 (Week 18 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: Career Technology, Common Core Programme (JHS1-JHS3), 2023, p. 98
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

1. Identify finishes and tools for finishing resistant materials
E.g.
- Finishes-lacquer, paints, thinner, turpentine
- Tools-brushes, spray can, roller
2. Identify materials used for preparing surfaces of wood, metal and wall to be finished.
E.g., sanding sealers, sand paper, emery cloth, filler
3. Prepare the surface to be finished by using glass paper for wood, emery cloth for metal, and filler for walls.
4. Demonstrate the procedure for applying finishes to resistant materials, in groups.
E.g.
- Mix lacquer with thinner
- Apply first coat and allow to dry
- Apply second coat and allow to dry
5. Demonstrate how to wash the finishing tools after use.
E.g.
- Use thinner to wash brush used for applying lacquer
- Use water to wash brush used for applying emulsion paint