valutazioni - 6, GPA: 4
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Facilità d'uso
5) Allow the machine to run up to speed, and stay there for at least 30 seconds before beginning work. If the grinder does not run smoothly, refer to the section on page 8 on Grinding Wheel care. Be sure the Grinding Wheel is properly dressed and balanced before beginning work. Be sure the Grinding Wheel is running at full speed before beginning work. 6) Feed the workpiece smoothly into the Grinding Wheel (22). Do not apply heavy pressure or bump the workpiece against the Grinding Wheel. Apply light pressure on the work piece. Try to allow the Grinding Wheel to continue to turn at full speed as you work. WARNING: Do not use this grinder over 30 minutes each hour, or longer than 20 minutes continuously. This will help prevent overheating of the grinder, and extend grinder life. 7) When done sharpening, move the Power Switch (6) to the OFF position. Allow the Grinding Wheel to come to a stop on its own. Do not manually stop the Grinding Wheel by grabbing it or holding an object against it. Stopping the Grinding Wheel causes stress and possible damage to the gears and belts. Using the Angle Guide to adjust the Tool Rest angle You can use the angle guide to adjust the Tool Rest (31) to best sharpen your tools. 1) Determine the best sharpening angle for your tool. The included angle guide has several useful angles for sharpening knives, chisels and other hand tools. 2) To adjust the tool rest’s position, the unit has two Tool Rest Adjusters (34). The bottom one adjusts the arm’s angle, and the top adjusts the rest’s angle. The adjusters have two positions: In the normal position, they adjust the tightness of the joint. If they are pulled out, they can turn freely to go to the beginning of the turn. They are spring loaded, so they automatically return to the first position. 3) Place the Grinding Guide on the Grinding Wheel as shown in the photo, using the selected grinding angle. 4) Adjust the Tool Rest (31) vertically, then push it forward against the Grinding Guide. The edge of the Tool Rest (31) should be within 1/16” of the grinding wheel. 5) Tighten the Tool Rest Adjusters (34) To fix the Tool Rest in place. The adjusters should not be over tightened, as they will break. Effective Sharpening 1) For best results, the Grinding Wheel should be turning toward the blade. 2) Hold the blade flat against the Tool Rest (31), and move it lightly against the Grinding Wheel (22) as you move it from one side to the other. Reverse the blade, and move it again lightly against the Grinding Wheel from side to side. Do not aggressively feed the blade into the Grinding Wheel. Repetitive light passes on each side of the blade will produce best results. 3) After grinding the blade, use a burnisher, fine whetstone or knife steel (not included) to remove microscopic burrs from the blade edge. Maintenance Dressing the Grinding Wheel For best sharpening results, it is important to maintain the Grinding Stone in good condition. With use the Grinding Stone will wear, and may become out of round or uneven. Dressing the Grinding Wheel will restore its proper shape and roundness. The stone must be dry to dress it. Pour the water out of the Grinder, and allow time for the Grinding Wheel to thoroughly dry before dressing. To dress the Grinding Wheel, hold a dressing tool (available separately from Harbor Freight Tools) or a flat piece of hardened steel (not included) against the Grinding Wheel as it turns. It is important to hold this tool firmly, and supported by the Tool Rest as you are shaping the Grinding Wheel. Slowly feed the dressing tool or piece of steel into the Grinding Wheel, until the Grinding Wheel fully contacts the dressing tool. The Grinding Wheel should now be even and round. Observe the Grinding Wheel spinning freely for a few seconds to determine its condition. If necessary, continue to dress the wheel until it spins smoothly. Angle Guide Tool Rest (31) Tool Rest Adjusters (34) Changing the Grinding Wheel Eventually, the Grinding Wheel may require replacement. The Grinding Wheel should be replaced when it has lost approx. 25% of its diameter. Suitable Grinding Wheels are available from Harbor Freight Tools. 1) Ensure that the replacement Grinding Wheel is no greater than 8” in Diameter nor 1.65” in Width. The bore must be designed to fit a 15/32” Spindle. 2) Be sure the Grinder is unplugged and turned OFF. 3) Pour the water out by tilting the grinder to the rear. 4) Remove the two outermost screws on each Bearing Block, and set the Bearing Blocks aside (as shown in the photo at right). 5) Remove the Grinding Wheel assembly by lifting it straight up, as shown in the photo at left. 6) Remove the Brass Bearing, V-ring (19), two Nuts (20), and Flange (21). You may now slide the old Grinding Wheel off the Axle (23). See photo on right. 7) Install the new Grinding Wheel, and replace the Flange (21) and Nuts (20) as they were before. Do not over tighten the Nuts. The Grinding Wheel assembly should then be reassembled, the bear...