blade size and cutting rpm - Family Woodworking

20 inches down to 12 is a big drop in diameter. If you were able to cut 4 inches with the 20 inch blade, you have just taken away 4 inches, so you are down to nothing. If your new RAS would cut 6 inches deep, you are now down to 2 inches depth of cut with the tiny 12 inch blade.

Remember that a RAS likes a negative hook blade, or it will climb and attack you. Is your 12 inch blade negative hook?

When you go to a large blade saw the motor of a RAS has to pass over the work, and can get in the way, and the arbor washer tends to be pretty large.

Source: http://familywoodworking.org/forums/showthread.php?26865-blade-size-and-cutting-rpm

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