saw blades with riving knife - std kerf vs. thin - Woodworking Talk - Woodworkers Forum
 
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post #1 of 5 Old 05-21-2011, 12:14 PM Thread Starter
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saw blades with riving knife - std kerf vs. thin

I need to replace a standard 0.125" blade on my Grizzly 1023R that uses a rving knife. Grizzly says that the knive requires you to use a standard kerf blade as the thin kerf ones are thinner than the knife and they don't make one to match.

I really would like to use the thin kerf ( 0.0904") blades as they are more readily available, cheaper, and have other advantages. But the 1023 at 3hp can handle the 0.125" blades no problem.

My question is --- If I can adjust the riving knife correctly on the right side and let the left side of the blade be misaligned, is that a bad thing? I really never use the left side of the blade and when needed I would remove the knife. This would let me use any blade kerf.


Any suggestions?
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post #2 of 5 Old 05-21-2011, 12:21 PM
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The kerf must be wider than the knife. Otherwise it acts like a wedge and binds.
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post #3 of 5 Old 05-21-2011, 01:09 PM
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Quick answer no.

If your dead set on the thin kerf maybe you can have a riving knife made at a machine shop. I don't see the point in doing it, just use the full kerf blade.

Last edited by rrbrown; 05-21-2011 at 01:13 PM.
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post #4 of 5 Old 05-21-2011, 02:03 PM
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Quote:
Originally Posted by DPJeansonne View Post
I need to replace a standard 0.125" blade on my Grizzly 1023R that uses a rving knife. Grizzly says that the knive requires you to use a standard kerf blade as the thin kerf ones are thinner than the knife and they don't make one to match.

I really would like to use the thin kerf ( 0.0904") blades as they are more readily available, cheaper, and have other advantages. But the 1023 at 3hp can handle the 0.125" blades no problem.

My question is --- If I can adjust the riving knife correctly on the right side and let the left side of the blade be misaligned, is that a bad thing? I really never use the left side of the blade and when needed I would remove the knife. This would let me use any blade kerf.


Any suggestions?

Short answer no, long answer NO.
Riving knife must be thinner than the blade kerf and thicker than the blade plate. Any other combination is going to either cause the stock to hang up on the knife or close up on the blade. Thin kerf are probably more readily available as there are more of the smaller saws out there. Thin kerf blades may have some advantages but a lower power requirement and price are the only ones I can think of. On the other hand, standard blades are much less susceptible to heat buildup and stability problems
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post #5 of 5 Old 05-22-2011, 02:58 PM Thread Starter
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std kerf blades

Thanks for all the comments. I think the thin kerf blade would not be worth it.
I'll just get a standard blade.

Thanks again.
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