Long straight types of blades such as jointer or planer knives can also be sharpened on this machine as well. Position the blades as shown in Figure 7, with the miter gauge set at a zero angle. For this type of operation, it is necessary to sweep the blade edge across the wheel. The sliding table retained in the groove of the tool rest holder allows for this sweeping action. Allow the blade edge to push the circular foam materi- al down, this is perfectly acceptable and helps to insure the water does not spin off the wheel.

Maintain a constant and steady pressure throughout the entire range of the sweeping action to ensure that the blade is evenly ground all the way to its edges. Be sure to avoid over- heating the blades during grinding.

Sweep back

and forth

Figure 7. Grinding long knives.

Use extreme caution when working near rotating grinding wheels. Accidental con- tact with the wheel can cause cuts and abrasions. The spinning wheels can also propel items which are not firmly support- ed. Failure to exercise care while working near grinding wheels could result in severe injury.

Dry Wheel Grinding

Adjust the angle of the Tool Rest by loosening the two lock knobs. The angle can also be affect- ed by raising or lowering the entire Tool Rest assembly by loosening the hex bolt at the front of the wheel guard. Once you have achieved the angle necessary for the item to be ground, make certain all the adjustment knobs and bolts are tightened so the rest will not move during grind- ing.

Position the Eye Shield so it will cover the grind- ing area. The Eye Shield can be moved up and down, as well as back and forth, to get it in a position where sparks will not fly up in the oper- ator’s face. Tighten the adjusting bolt.

For dry grinding, it may be helpful to have a tray of water handy for quenching the piece when it builds up heat in the grinding process. Similar to the wet wheel process, quenching keeps the ground item from losing its temper by keeping the temperature down.

Turn the grinder on and allow the wheel to come up to full speed. Place the item to be ground firmly on the Tool Rest and introduce it slowly into the wheel. Grinding should be done lightly and for short duration to avoid damage to the tool you’re working with.

Figure 8. Grinding on dry wheel.

 

 

 

 

 

 

 

 

 

 

 

 

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G8220 Wet/Dry Bench Grinder

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Grizzly G8220 instruction manual Dry Wheel Grinding, Grinding long knives
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G8220 specifications

The Grizzly G8220 is a versatile tool that stands out in the woodworking and metalworking landscape, offering a blend of power, precision, and user-friendly features. This machine is primarily designed as a combination belt and disk sander, making it an asset for both hobbyists and professional artisans alike.

One of the key features of the Grizzly G8220 is its robust 1 HP motor, which provides ample power to handle a variety of sanding tasks. With a belt speed of 1,725 RPM and a disc speed of 3,600 RPM, this tool allows users to achieve smooth finishes on a range of materials, from hardwoods to softer metals. This ability to adjust sanding speeds not only enhances versatility but also ensures efficiency in the sanding process.

The Grizzly G8220 boasts a sizable sanding surface, including a 4-inch by 36-inch sanding belt and a 8-inch disc. This generous area facilitates larger workpieces and reduces the number of passes needed to achieve desired results. Additionally, the tilting table of the disc sander can be adjusted from 0 to 45 degrees, enabling bevel sanding for more complex projects.

Incorporating user safety as a priority, the G8220 includes features such as an integrated dust port that connects easily to dust collection systems. This helps keep the work area clean by minimizing debris and maintaining air quality. The machine's heavy-duty cast iron construction not only provides stability during operation but also contributes to reduced vibrations, resulting in a smoother sanding experience.

The machine is designed for ease of use and maintenance. The belt can be adjusted without tools, allowing for quick changes and maintenance. The onboard storage for tools enhances convenience, ensuring that everything needed is within reach.

Technologically advanced, the Grizzly G8220 supports a variety of sanding applications, including contour sanding and straight-edge sanding. It offers an excellent balance of power and precision that is ideal for both detailed intricate work and brute sanding tasks.

In summary, the Grizzly G8220 is an exceptional combination sander that delivers excellent performance and flexibility. Its powerful motor, generous sanding surfaces, and user-friendly features make it a reliable choice for woodworking professionals and enthusiasts, allowing them to tackle a wide range of projects with ease and effectiveness. Whether working on intricate designs or large-scale products, the Grizzly G8220 stands out as a must-have tool in any workshop.
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