You adjust the depth of cut on a radial arm saw primarily by turning the elevating handwheel. This raises or lowers the motor and blade assembly, controlling how far the blade extends below the table surface.
Here's a more detailed explanation:
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Locate the Elevating Handwheel: This is usually a large, prominent wheel located on the column of the saw. Its specific location may vary slightly depending on the model.
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Adjusting the Depth: Turning the handwheel will raise or lower the entire saw head.
- To increase the depth of cut: Turn the handwheel in the direction that lowers the saw head, extending the blade further below the table.
- To decrease the depth of cut: Turn the handwheel in the direction that raises the saw head, retracting the blade.
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Setting the Optimal Depth: A common guideline is to adjust the depth so that the teeth of the blade extend approximately 1/16 inch (or slightly more) below the surface of the workpiece being cut. This ensures a clean and efficient cut without excessive blade exposure.
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Locking the Position: After setting the desired depth, ensure that any locking mechanisms (usually a lever or knob) are engaged to secure the saw head in its position. This prevents the saw head from moving during operation, which could lead to inaccurate cuts or safety hazards.
Safety Considerations:
- Power Off: Always ensure the saw is completely powered off and unplugged before making any adjustments.
- Blade Inspection: Regularly inspect the blade for sharpness and damage. A dull or damaged blade can negatively affect the quality of the cut and increase the risk of kickback.
- Proper Support: Ensure the workpiece is properly supported to prevent movement during cutting.
