3. Finishing of Flat Wide and Narrow Faces
Finishing of flat wide and narrow faces involves the following operations:
Clamping of the workpiece in a carpenter’s bench or work bench with the face to be finished on top
Planing with the double plane and fine-chip setting
The planing strokes should be long and overlap a little.
Working with the scraper
The scraper is mainly used for finishing of hard wood. With soft wood, the wood grains would press into the face during working and no chip would be removed.
The scraper is to be guided lightly over the face with both hands
- with drawing cut,
Sanding with sanding tools
Sanding includes the steps:
• across the wood grain in the case of surfaces to be provided with covering coat of paint,
- Uncovered edges of the workpiece are to be sanded throughout (smoothing off of edges) with slight, uniform pressure.
Checking the surface for flatness and smoothness.
The surface quality is to be checked by:
- comparison of the face with a straightedge according to the light-gap testing method.
The face is flat if the sighted workpiece edges are congruent.
- touching the face with the hand.
The face is smooth if no irregularities are sensible.
Why must uncovered workpiece edges be sanded?
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