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Wood Finishing

Wood Finishing. Wood Finishing. What is wood finishing? Why do we finish wood? What are the steps to achieving a good finish?. Wood Finishing. Two steps to wood finishing Sanding Applying a chemical protectant (finish). Sanding. Why do we sand the surface and edges:

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Wood Finishing

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  1. Wood Finishing

  2. Wood Finishing • What is wood finishing? • Why do we finish wood? • What are the steps to achieving a good finish?

  3. Wood Finishing • Two steps to wood finishing • Sanding • Applying a chemical protectant (finish)

  4. Sanding • Why do we sand the surface and edges: • To remove machine marks • Smooth surface for good “feel” • Promote adhesion for finish

  5. Sanding • Removing Machine Marks

  6. Sanding • Making the wood “smooth” 80 Grit 120 Grit

  7. Sanding • Sanding should be done in at least three steps • 80 Grit (sub 100) • 150 Grit (sub 120) • 220 Grit (sub 180)

  8. Abrasive Paper 40 gr, 80 gr, 150gr, 220 gr, 600gr

  9. Sanding Tips Don’t Quit too Soon (see machine marks) Sand with the grain Don’t apply finish before 180 grit (see sander marks)

  10. Sanding Tips • Raising the Grain • Final Step before applying finish • Raises the last tiny fibers so you can sand them off

  11. Chemical Protectant • Wood is a porous absorbent material • Without finish it: • Discolors • Shrinks • Swells • Warps

  12. Chemical Protectants • There are many different finishes, however there is usually a “best” finish available for a given application. • Stain, Oil, Wax, Shellac, Varnish, Lacquer, Paint, Enamel, Epoxy and Polyester Resin, and Water-Based Finishes (low VOC) • Applying Finish

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