Yes all power tools are dangerous, if used improperly. I suggest this based on experiance with aluminum struts on a Honda Vmax. My friend wanted a mirror finish, but the struts where brushed finish. I spent 10 minuits on the buffing wheel with some medium compound on each strut. My friend was exstatic, shinyer than chrome!

But for goodness sake, Be Careful! Hold the part under the wheel so if it grabs it will throw it away from you.  And practice is a great idea! smile
Macbook 2.1 core duo 1gig 160gb sata
iMac g5 w/1 gig 160gig all-in-one and SWEET!
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Quicksilver Dual 800's
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"Guys, I think we just lost the platform here" Pete Conrad
When in doubt, try SCE to AUX