Reply by MrUnix

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Posted on Slow down table saw blade for ripping?

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7530 posts in 2759 days

#1 posted 04-20-2017 08:09 PM

The difference between a ripping and cross-cutting blade is not the “teeth per second” hitting the wood, but the number of teeth engaging the wood.

Here is what Freud recommends:

The number of teeth cutting the wood simultaneously must be between 3 or 4 for ripping and ideally 5 to 7 for crosscutting. With less than 3 teeth cutting the sawblade begins to vibrate leading to an uneven cut. If you want to cut work pieces with increased thicknesses, but wish to maintain the same diameter saw blade, then use a blade with less teeth. If instead you want to cut work pieces with a reduced thickness, but also maintain the same diameter saw blade, then use a blade with more teeth.

Slowing the blade down does work well for stuff like non-ferrous metals (ie: sheet aluminium) and things like plexiglass, where it tends to melt when run at full speed. I just wouldn’t run it at too much of a reduced speed for long periiods of time though, as it effects the motors fan and it’s ability to move enough air to keep it cool (assuming you have a TEFC motor).


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