3.3 Surface preparation

• Reasons for finishing a wood product
• Materials and tools for surface preparation
• Preparing a surface: scraping, raising the grain, hand sanding
• Applying clear varnish

• explain the reasons for finishing a wood product
• select materials and tools for surface preparation
• prepare a wood surface to receive clear varnish
• appreciate the importance of preparing surfaces to receive finishes

“Why is finishing a wood product important, and why prepare the surface first?”

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1. Why finish a wood product
   40 min · 1 practice tasks · quiz
   What finishing means and the two big reasons for it - protection and appearance.
2. Finishing for protection
   40 min · 1 practice tasks · quiz
   The protection reasons for finishing in detail - moisture, wear, dirt, insects and durability.
3. Finishing for appearance
   40 min · 1 practice tasks · quiz
   The appearance reasons for finishing - colour, grain, smoothness and a professional look.
4. Types of wood finish
   40 min · 1 practice tasks · quiz
   An overview of the common wood finishes - varnish, paint, oil, wax and polish - and their uses.
5. Why prepare the surface first
   40 min · 1 practice tasks · quiz
   Why the surface must be well prepared before finishing - a finish shows and highlights every flaw.
6. Materials and tools for surface preparation
   40 min · 1 practice tasks · quiz
   Selecting the materials and tools for surface preparation - scraper, sandpaper, files, hot iron and cloth.
7. Scraping the surface
   40 min · 1 practice tasks · quiz
   Using the cabinet scraper to remove plane marks and level the surface before sanding.
8. Preparing edges and curves
   40 min · 1 practice tasks · quiz
   Preparing shaped parts - edges, curves and end grain - using files, rasps and abrasive paper.
9. Raising the grain and lifting dents
   40 min · 1 practice tasks · quiz
   Raising the grain with a damp cloth, and lifting small dents with a hot iron and damp cloth.
10. Hand sanding
    40 min · 1 practice tasks · quiz
    Hand sanding with abrasive paper - working coarse to fine, with the grain, using a block.
11. Removing marks, glue and defects
    40 min · 1 practice tasks · quiz
    Removing the common surface defects - plane marks, glue smears, dents, and dirt - before finishing.
12. Preparing a surface: the whole process
    40 min · 1 practice tasks · quiz
    A practical lesson: preparing a wood surface fully - scrape, raise the grain, sand fine - ready for varnish.
13. Clear varnish
    40 min · 1 practice tasks · quiz
    What clear varnish is - a tough, clear protective coating - and its types and how it works.
14. Applying clear varnish
    40 min · 1 practice tasks · quiz
    A practical lesson: applying clear varnish to a prepared surface for a smooth, even finish.
15. Safety and care in finishing
    40 min · 1 practice tasks · quiz
    Safety when using finishing materials (fumes, flammability) and care of brushes and disposal.
16. Why finishing and surface preparation matter
    40 min · 1 practice tasks · quiz
    The inquiry answered: why finishing a wood product is important, and why prepare the surface first.