Setting the Spindle

RPM

NOTICE

Never shift gears while lathe or mill is running; otherwise, the gear teeth will be chipped or broken.

To determine and set the mill to the needed cutting RPM:

1.Select the cutting speed required for the material of your workpiece using the table in Figure 46.

Cutting Speeds for High Speed Steel (HSS) cutting tools:

Workpiece Material

Cutting Speed (sfm)

Aluminum & alloys

300

 

 

Brass & Bronze

150

 

 

Copper

100

 

 

Cast Iron, soft

80

 

 

Cast Iron, hard

50

 

 

Mild Steel

90

 

 

Cast Steel

80

 

 

Alloy Steel, hard

40

 

 

Tool Steel

50

 

 

Stainless Steel

60

 

 

Titanium

50

 

 

Plastics

300-800

 

 

Wood

300-500

 

 

Figure 46. High speed steel cutting chart.

Note: Double the cutting speed for car- bide cutting tools. These values are a guideline only. Refer to the MACHINERY'S HANDBOOK for more detailed information.

2.Measure the diameter of your cutting tool in inches.

3.Use the following formula to determine the needed RPM for your operation:

(Cutting Speed x 4) / Tool Diameter = RPM

G0492 12" X 36" Combo Lathe/Mill

Note: You will only be able to get an approxi- mate RPM value with the variable speed knob.

4.Move the mill gearbox levers to the nearest milling speed RPM.

NOTICE

Failure to follow RPM and Feed Rate Guidelines will shorten cutter life and give poor workpiece results and may threaten operator safety from ejected parts or broken tools.

Using the Mill

The quill feed is controlled by the handle on the right of the headstock, and a lock bolt on the left side of the headstock (Figure 47).

To use the quill:

1.Hold a feed handle, and loosen the quill feed lock bolt to release the quill.

2.For drilling, pull the handle toward you and the quill will feed down toward the workpiece.

Note: The quill feed handle is spring loaded. DO NOT let go of the handle at the end of a drilling operation or the quill will quickly retract and slam into the headstock.

3.For milling, hold the quill at a particular depth and tighten the quill lock bolt.

Quill

Lock

Bolt

Figure 47. Quill lock.

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Grizzly G0492 owner manual Using the Mill, To use the quill
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G0492 specifications

The Grizzly G0492 is a versatile 12" dual-drum sander designed to enhance the woodworking experience for both hobbyists and professionals. This robust machine provides an exceptional combination of power, precision, and ease of use.

One of the standout features of the G0492 is its dual-drum design, which allows users to sand larger workpieces more efficiently than traditional single-drum models. This dual-drum configuration not only speeds up the sanding process but also ensures a more uniform finish. The machine supports a variety of sanding applications, making it suitable for different types of woodworking projects, from furniture making to cabinetry work.

Powered by a robust 3 HP motor, the G0492 delivers ample power to handle tough sanding tasks with ease. The variable speed control further enhances user flexibility, allowing for adjustments to accommodate varying wood types and grain patterns. This feature is particularly valuable when transitioning between softwoods and hardwoods, ensuring optimal sanding results.

Another noteworthy characteristic of the Grizzly G0492 is its user-friendly design. The machine includes a built-in digital thickness gauge that allows for precise adjustments, ensuring consistent thickness throughout the sanding process. This not only saves time but also minimizes the risk of damaging the workpiece.

Additionally, the G0492 is equipped with a dust collection system that efficiently captures sanding debris, promoting a cleaner workspace and enhancing air quality. This feature is essential in maintaining a safe and comfortable working environment, which is often overlooked in woodworking.

Durability is a hallmark of Grizzly tools, and the G0492 is no exception. Constructed with heavy-duty steel frames and components, this dual-drum sander is designed to withstand the rigors of daily use.

In summary, the Grizzly G0492 combines powerful performance, ease of use, and advanced features into a compact machine that meets the demands of serious woodworkers. Whether you are a professional working on large projects or a DIY enthusiast looking to enhance your craftsmanship, the G0492 will elevate your sanding experience, making it a valuable addition to any workshop.
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