If someone is going to play with the saw blade idea, get a video camera for the event. Leave the video tape to me in your will so I can sell it to hollyweird. I can see it now "Jack Ass II - Sharp Spinning Objects" :-D By the way, DON'T DO IT! You got me on to the wood working tool subject, something I know more about then Linux or M$. I know that a hand held circular saw blade spins from about 1100 rpm to over 5000 rpm. They use a universal motor. The universal motor is designed to run at higher rpm, at lower horse power, for cutting quick cross cuts. A a radial arm or table saw uses an induction motor that runs at lower rpm but higher horse power. The induction motor will maintain it's rotational speed when ripping the length of a 6 foot oak 2x10 because the horse power is greater. A radial arm saw (one of my favorite wood working tools by the way) by Delta has a 14 inch blade and a 3 horse motor, it produces about 3400 rpm. I would not want t be in the way if that blade comes off the spindle. At least it would _not_ go in the direction of the user if it did. I've seen blades with missing carbide teeth but I have not had the joy of being in the way of one. They generally come off in the material being cut. It happens because people force to much material in to the blade or the material has nails or other foreign matter in it, loosening and removing teeth. This would be similar to the CD coming apart in the drive. Using your ears is the best measure of how a saw is performing. I heard a 5 horse table saw come to a complete stop and blow the breaker one time. To much material being forced in to the blade. It really didn't take that long, the kid didn't understand why it "always" did that (@#$%$). I explained to him why he should take his time and let the machine do the work. Norm is right, always ware your safety glasses! Sam. Adam Maloney wrote: ><snippage of geeky physics stuff> > >Wow, some of this is actually coming back to me. It's been awhile since >Physics-I at the U (I had that older German prof, goofy guy...Hans or >something) > >We did some calculations in class once about a (solid-frame all-steel >full-sized) Cadillac colliding head-on with a VW bug. > >I don't remember any of the numbers, but the Caddy driver ended up >calling the ambulance/coroner for the VW driver, who would have been >catapulted 60+ feet through the windshield (assuming no seatbelt, no >windshield). Made me feel a lot better about driving my (solid-frame, >all-steel, full-sized, '89 Crown Vic) Shaggin' Wagon. > >It would be interesting to see a comparison between a spinning CD and >the spinning blade of a radial arm saw. Granted, the blade is much >heavier than a CD, but I bet the CD spins a lot faster > > > _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota http://www.mn-linux.org tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list