I second the suggestion to get the Grizzly with the disk sander. The disk
sander is great for outside radius sanding where as the spindle sander works
best on inside radius sanding. As far as HP though, the extra HP is
certainly needed for the disk sander as the leverage that is exerted against
the motor at the edge of the disk is considerable. My Jet spindle sander
has a 3" spindle also and I do not recall having ever stalled the motor.
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