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Disc Sander Mode-Setup & Features
Sandpaper Discs
Disc Sander Safety
Disc Sander Speeds
End Grain Sanding
Edge Sanding
Sanding Miters & Bevels
Truing Miters & Bevels
Sanding Curves and Circles
Pattern Disc Sanding

Disc Sanding
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Disc Sander Speeds

Before you begin any disc sanding operation, set the Mark V to run at the correct speed. To do this: turn the machine on, turn the speed dial to the correct speed and let the disc come up to speed.

The operating speeds for disc sanding are determined by the grit you're using and the material you're sanding. Generally, you can use faster speeds on softer woods. Faster speeds will also give you a smoother finish. Slower speeds reduce the risk of “burning” the workpiece and are better for sanding away large amounts of stock.

To help determine the right speed for the job, use Table 17-1. A good rule of thumb is: The softer the material or the finer the grit, the faster you can run the sander. However, don't run the sanding disc too fast or the wood may heat up and burn.

Table 17-1: Disc Sander Speed Chart
Grit Hardwood Softwood
Course (60#) D (1050 RPM) E (1150 RPM)
Medium (80#) F (1300 RPM) G (1450 RPM)
Fine (100#) G (1450 RPM) H (1600 RPM)
Grinding or Sharpening Metal Tools - Slow (700 RPM)
Note: These speeds are for 60 hz operations.

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