Stock Inspection &
Requirements
Here are some rules to follow when choosing and jointing stock:
•DO NOT joint or surface plane stock that contains large or loose knots. Injury to the operator or damage to the workpiece can occur if a knot becomes dislodged during the cutting operation.
•DO NOT joint or surface plane against the grain direction. Cutting against the grain increases the likelihood of stock kickback, as well as
•Jointing and surface planing with the grain produces a better finish and is safer for the operator. Cutting with the grain is described as feeding the stock on the jointer so the grain points down and toward you as viewed on the edge of the stock (Figure 24).
Note: If the grain changes direction along the edge of the board, decrease the cutting depth and make additional passes.
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Figure 24. Correct and incorrect grain align-
ment with cutterhead.
G0656 8" Jointer with Built-In Mobile Base
•Only process natural wood fiber through your jointer. Never joint MDF, particle board, plywood, laminates, metal, stone, tile, glass, plastic or other synthetically made materials.
•Scrape all glue off of boards before joint- ing.
•Remove foreign objects from the stock. Make sure that any stock you process with the jointer is clean and free of any dirt, nails, staples, tiny rocks or any other foreign objects, which if they hit the knives and are drawn into the dust collector, may cause a fire hazard. The particles may also damage the knives. Wood stacked on a concrete floor can have small pieces of stone or concrete pressed into the surface.
•Make sure all stock is sufficiently dried before jointing. Wood with a moisture con- tent over 20% will cause unnecessary wear on the knives and poor cutting results. Excess moisture can also hasten rust and corrosion.
•Make sure your workpiece exceeds the minimum dimension requirements (Figure
25)before edge jointing or surface plan- ing, or it may break or kick back during the operation!
12" Min. | 12" Min. |
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1" Min. | 1⁄2" Min. |
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1⁄2" Min. | 1" Min. |
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