 | Surface Finish by Dyeing, Staining, Pigmenting, Matting and Polishing - Course: Manual Woodworking Techniques. Instruction Examples for Practical Vocational Training |
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Instruction Example 9.3.: Corner Shelf Board
Surfacing of a board by extracting resin, pigment staining and varnishing.
Material
Figure
- Resinous board:
thickness: 20 mm
width: 300 mm
length: 300 mm
- Saponification agent:
Curd soap solution or 10% ammonium chloride solution
- Neutralizing agent:
10 to 15 % acetic acid
- Pigment staining agent- Oil or alkyd resin varnish
Tools
Sponge, hard brush, various vegetable fibre paintbrushes without metal rings, bench brush, sanding pad with fine coated abrasives
Measuring and testing means
Visual inspection (measuring by the eye)
Auxiliary accessories
Supporting table, earthenware pots for saponification and neutralizing agents, rubber gloves, sawdust
Necessary previous knowledge
Fundamentals of manual woodworking
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Sequence of operations |
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1. Prepare the workplace. Make working material available. |
Check completeness. |
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2. Place on support the prepared, planed board pre-sanded on edges and surface. | |
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3. Wetly apply saponification agent to both surfaces. |
Sponge the entire surface with the solution several times. |
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4. After a reaction time of 15 minutes, strongly brush in wood grain direction. | |
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5. Wash immediately, rub down with sawdust and clean. | |
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6. Neutralize the surface. |
Apply 10 to 15 % acetic acid. |
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7. Wash the surface with warm water and finely sand after it has dried. | |
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8. Apply pigment staining agent to the surface and distribute it. |
Thoroughly rub the staining agent into the pores. |
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9. After the surface has dried, brush it. | |
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10. Apply three varnish coats to the surface until it has closed pores and becomes shining. |
After the first coat has dried, intermediately sand it with fine coated abrasives. |
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11. Check finally. |
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Corner Shelf Board
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