safety_jointer

include component="page" page="toolbar_TCJ" editable="1" include component="page" page="TDJ1O_assignments" editable="1" include component="page" page="toolbar_machinesafety" editable="1"  JOINTER 1. Keep the guard covering the cutterhead in place and free to function at all times. 2. Remember the jointer's main function is to straighten the edge of lumber and it should not be used as a surfacer planer. 3. Keep the knives sharp and properly grounded adjusted. Dull knives are more likely to cause a kickback. Knives out of adjustment, either cutting on an angle or one knife adjusted lower or higher than the others, will cause improper cutting and possibly a safety hazard. 4. When knives are replaced, all knives should be replaced and be sharpened alike as a set. Due to the speed of the cutterhead (6000 rpm) knives must be in balance. Most cutterheads will have three knives. 5. The depth of cut is adjusted with the front table adjusting hand wheel. The machine should never be set to cut more than 1/8" for softwood or 1/16" for hardwoods. 6. The depth of cut scale should be checked and readjusted to zero each time that new blades are added or after adjustments to the cutterhead. 7. To do satisfactory work the rear table must be exactly level with the knives in the cutterhead. Check by laying a straightedge over the table and cutterhead and then adjusting the table up or down as needed. Only a qualified person should make this adjustment. 8. The fence should be moved back and forth to different positions periodically so as not to cut at the same position on the cutterhead. Check the angle of the fence with a square and adjust fence pointer or scale to the zero point. 9. Bevel cuts may be made adjusting the fence control handle to proper angle. Bevel cuts at sharp angles are more dangerous as the stock will tend to slide down the fence and floats over the cutterhead. 10. Check grain of lumber to be certain the knives are cutting with the grain and not against it. A beginner should not attempt to joint end grain. 11. Have a push stick handy so it can be used on short pieces or at the end of a board so ass to keep hands far from cutterhead as possible. 12. If jointing long pieces, use a roller support or have someone support the piece after it passes over the rear outfeed table. 13. Do not stand directly in line with the table in case of a kickback. Also see that others are not in line with the jointer when in use. 14. The cutterhead turns down towards the front infeed table; therefore, the revolving cutterhead will have a tendency to throw the work back towards the operator. 15. Do not attempt to joint stock less than 1/2" thick or pieces shorter than 12" in length. 16. Push stock into the jointer slowly or at about 16 feet per minute. Make certain the stock is snug against the table and fence surfaces as it is moved across the tables. 17. Turn off the power and allow machine to stop before leaving the area. 18. Test squareness of edges with a square and by stacking pieces of edged lumber on edges.
 * A. Parts Identification: **
 * B. Safe Operational Procedures: **