SAASTE Technology/Activities/Preservation-2

SAASTE Technology
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Conductors & Insulators - Electronic Circuits - AND & OR Gates - Circuit/Systems Diagram - Hydraulics - Hydraulics & Pneumatics - Technological Products - Preservation-1 - Identifying Materials - Properties of Materials - Preservation-2 - Electroplating - Conditioning-Strengthening/Waterproofing-1 - Conditioning-Strengthening\Waterproofing-2 - Shaping - Forming - Forces - Types of Structures - Mechanisms Worksheet


Grade 6



Wind, heat, water are some of the main causes of materials deteriorating. One of the ways to preserve these materials is to treat them with a preservative.

The material we will work with is wood.

You will need:

  • Wooden peg, small piece of wood, wooden coaster, wooden spoon, wooden cutting board, classroom desk.
  • Varnish, wax polish, silicone spray, cooking oil, lacquer, paint.
  • Brushes, pieces of cloth, newspaper.

About preservatives


The technique you use will depend on:

  • the condition of the article
  • the type of preservative used

The choice of preservative will depend on:

  • the type of article
  • the intended use of the article

How to apply preservatives:

  • In most case it is advisable to sandpaper the article first.
  • If you are using paint, varnish, lacquer, etc use a clean brush and apply thin coats. Allow to dry between coats and sand lightly before applying the next coat.
  • If you are using wax, apply with a clean cloth. Use a circular motion and finish off with straight strokes. You could also "buff" (shine) the article with a dry cloth.
  • If you are using oil you could pour a little onto the article and then using a clean cloth rub the oil into the article. Wipe off any excess oil.
  • If you are using sprays, apply thin coats. Sand in between coats.

Think and Do activity:

Think: Complete the table below to show what preservative you will use for each article, give a reason and say how you will do it.


Type of preservative

Reason for use

Technique to apply preservative

Wooden peg

Wooden spoon

Wooden coaster

Classroom desk

Wooden cutting board

Do: Select the wooden spoon and the wooden peg and do the preservation.

Author: Cheryl Jaftha

Editor: Osman Sadeck