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Cahoots currently has three types: circular, triangular, and rectangular orbital sanders.

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What orbital sanders are for

• Removing surface material from wood, paint, and some plastics
• Smoothing surfaces and removing splinters
• Removing bumps, ridges, drips, and raised grain
• Roughening surfaces for better glue/paint/finish adhesion

Limitations

• Removes material quickly — can gouge if left in one place
• Can round edges/corners unintentionally
• Can create uneven/wavy surfaces if held in one spot
• Can leave visible sanding marks (less than belt sanders)
• Unsuitable for small or thin pieces
• Can grab/dig in when first contacting the surface (avoid by placing the running sander flat while moving laterally)
• Can burn/melt some materials (speed control may help where available)

Anatomy (key parts)

• On/off switch
• Speed adjustment dial (some machines)
• Sandpaper
• Velcro pad + hole pattern (circular/triangular)
• Sandpaper clamps + rubber pad (rectangular)