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1. Industrial Arts By: Marie Grace C. Suarez

2. Industrial Arts “-is a study of the changes made by man in the forms of materials to increase their values, and of the problems of life related to these changes”

3. Why is it important to enhance/decorate bamboo, wood and metal products?

4. What are the methods used of enhancing/decorating finished products?

5. Finishing Materials 1.Wood Filler -these are applied on wood to fill up cracks, holes, and grooves. There are two kinds of wood fillers:

6. 2 Kinds of Filler a. Paste filler – It comes from silex , raw linseed oil, and turpentine. It has colours such as natural, red, or golden oak. b. Shellac – this is a kind of varnish that dries up easily and is not waterproof. It comes from lac gum diluted in alcohol. Shellac is available in white or orange colour. White paste fillers are used to fill in big cracks and grooves or wood.

7. 2 .Wood Stain - The common wood stains used are oil stain, water stain, and spirit stain which are named after the solvent used. Stains are sold in different colours and shades.

8. The easiest to apply on wood is oil stain. The hardest one to apply is the spirit stain because it dries up easily.

9. 3. Paint A finishing material most commonly used on wood. Paint prevents moisture on the wood which causes decay. Paint beautifies wooden objects and makes them easy to clean.

10. 4. Varnish This is a transparent finishing material that comes from gum, linseed oil, and resin. It is hard and shiny when dry and gives sheen to the wooden project. Varnish is widely used in furniture and upholstery making.

11. 5. Enamel – this is kind of varnish with colour. Powdered colour pigments are mixed with the varnish. it is used on wood that is not exposed to the sun or rain because it easily fades. There are two kinds of enamel, gloss and non-gloss.

12. Gloss enamel gives sheen and has an attractive effect on wood. Non-gloss enamel does not give any sheen, but it beautifies wood.

13. 6. Lacquer – is another kind of varnish made of melted cotton tinters , gum, or chemicals. Like enamel, lacquer comes in different colours.

14. Identify the finishing materials used in each item. 1.

15. 2 .

16. 3 .

17. 4 .

18. 5 .

19. Why is it important to use finishing materials in finished products?

20. Evaluation Direction: Choose the letter of the correct answer. 1. Filler comes from silex , raw linseed oil, and turpentine. a. Shellac c. paste filler b. Varnish d. paint

21. 2.A kind of varnish that is not waterproof. a. Paint c. Shellac b. Enamel d. Lacquer

22. 3.T ransparent finishing material that comes from gum, linseed oil, and resin. a. Varnish c. stains b. Enamel d. paint

23. 4.K ind of stain that is easiest to apply on wood. a. Spirit stain c. fillers b. Oil stain d. paint

24. 5.It prevents moisture on the wood that causes decay. a. Enamel c. paint b. Varnish d. lacquer

25. Assignment: Search through the internet other materials needed in decorating bamboo, wood and metal products.