Riving knife question

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Forum topic by AliceAforethought posted 02-23-2015 01:22 AM 1286 views 0 times favorited 7 replies Add to Favorites Watch
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16 posts in 1834 days

02-23-2015 01:22 AM

Hi All,

Just joined not long ago, and asking my first question on the forum. I have a RIDGID 4510 table saw, and as a beginner woodworker, I am happy with the way it works. However, when I recently tried a 45 degree bevel rip cut, I discovered that my piece of lumber was hitting my riving knife. The riving knife works just fine at 90 and seems to be aligned right on…so I am not sure what to adjust to make a 45 degree cut work? It seems the lower part of the riving knife is what the lumber hits. Anyone out there have a similar issue? If so, how did you correct it?

Thanks for your reply.

7 replies so far

View RogerM's profile


801 posts in 2963 days

#1 posted 02-23-2015 06:44 PM

Remove the riving knife.

-- Roger M, Aiken, SC

View DrDirt's profile


4600 posts in 4306 days

#2 posted 02-23-2015 06:50 PM

Follow on to Roger – but do you have a riving knife or just a splitter.

When cutting a bevel, don’t have a splitter/knife in the saw.

The riving knife should tilt with the blade, is the angle wrong or is there an alignment issue that only shows up when tilted.

-- “The two most important days in your life are the day you are born and the day you find out why.” Mark Twain

View AliceAforethought's profile


16 posts in 1834 days

#3 posted 02-23-2015 10:14 PM

Thanks for the replies.

I think the angle is just wrong…I would remove the riving knife for bevel cuts, but it is a PITA to get that RK back and aligned with the blade. I’ll double-check the alignment one more time—otherwise, I’ll just remove it.

View Kazooman's profile


1386 posts in 2516 days

#4 posted 02-23-2015 10:33 PM

If by “I’ll just remove it” you mean leaving it off the saw all the time. do NOT do that! Your riving knife is a critical safety component of your saw. It is there to reduce the potential for kickbacks. Take the time to figure out what needs to be done to bring the riving knife into proper alignment. I have no experience with your saw or any models like it, so I can’t offer any direct solutions. If you actually do need to remove it for bevel cuts, then replace it for normal use, PITA or not.

View AliceAforethought's profile


16 posts in 1834 days

#5 posted 02-23-2015 10:41 PM

Kazooamn, I agree with you. I’d rather spend the time to make it work with the riving knife, than without.

The issue occurs when I set the blade at 45 degrees (away from the fence) and try to run stock through it. Although the riving knife tilts with the blade, the stock hits the knife on the fence side of the knife. I cannot push it any further without risking kickback or other accident.

View runswithscissors's profile


3081 posts in 2589 days

#6 posted 02-24-2015 06:06 AM

Quite possible that your RK is conflicting with the throat plate or some other part of the saw when tilted. That would flex the knife and spoil alignment. You might need to do a little grinding on the knife or on the table itself. I sometimes have that problem, especially when I have the blade raised to maximum height.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

View Garbanzolasvegas's profile


356 posts in 1791 days

#7 posted 02-24-2015 12:17 PM

Welcome to being a owner of a RIDGID power tool! The frustration never ends

-- If you don't Play, you can't win

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