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All Replies on craftsman table saw 351.218330 riving knife

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View marbles's profile

craftsman table saw 351.218330 riving knife

by marbles
posted 02-10-2017 08:17 PM


9 replies so far

View MrUnix's profile

MrUnix

7359 posts in 2560 days


#1 posted 02-10-2017 08:27 PM

The procedure for adjusting the RK seems pretty simple according to the manual... why is it that you cannot do what is described on page 8 (“Riving knife to blade adjustment”)? Are you not able to move the bracket far enough?

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

View marbles's profile

marbles

4 posts in 831 days


#2 posted 02-10-2017 08:36 PM

I can align the RK with the blade, like the manual instructs, so if I look down the blade, the RK is directly behind it . The problem is that the RK sits right on top of the blade with no clearance. I’m trying to get some pictures on so it might be clearer.

View Paul66's profile

Paul66

24 posts in 846 days


#3 posted 02-10-2017 09:58 PM

From that referenced page, there is aligning and then positioning the RK….

POSITION RIVING KNIFE

Riving knife is installed on the saw. Raise the blade completely to access the riving knife.

Loosen the locking knob and raise the riving knife to its highest position. Riving knife has three holes for three posi-
tions. The highest position is for all thru cuts. The middle position is for rabbets and other non-thru cuts, (with guard
and pawls removed). The lowest position is for dado cuts.

Make sure locking pin is aligned with riving knife hole and secure in position by tightening locking knob. Riving knife must be in line with blade. Make sure riving knife sits flat against mounting bracket and lock plate

View MrUnix's profile

MrUnix

7359 posts in 2560 days


#4 posted 02-10-2017 11:37 PM

Appears you need to loosen the bracket (not the RK) and push the top of the RK back a bit… there should be a consistent sized gap between the blade and RK its whole length. Yours isn’t – there is a gap down towards the table, but not up at the top of the blade:

Seems like it should be a pretty simple adjustment, unless something was drilled out of place. Seems unlikely though if this is a used saw that someone had been using previously.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

View marbles's profile

marbles

4 posts in 831 days


#5 posted 02-11-2017 12:44 AM

Thanks for the input. I posted another picture of the RK bracket.

As you can see those 2 screws hold the RK bracket on to the mounting plate. You are correct that the RK just needs to be pushed up to create the consistent gap but there is no way to tighten it down once it is in the correct position.The only way to create that gap between the blade would be to put a few washers on the front screw. I’ve considered doing this but I’d like to know what the correct way to fix it is.

The previous owner said he never used the RK and when i purchased the saw, the RK was in its lowest position out of the way. Is it possible that the arm that the RK sits on was installed out of position?

View ascanlon's profile

ascanlon

1 post in 76 days


#6 posted 03-07-2019 05:09 PM

I know this is an old post but I was wondering if ever found a solution to this problem? I have the same saw and am running into the exact same issue. I cannot see a way to install the riving knife with any clearance from the blade.

Thanks!
Andrew

View marbles's profile

marbles

4 posts in 831 days


#7 posted 03-08-2019 12:16 AM

I gave up on trying to install it and just went without it

View wingless's profile

wingless

32 posts in 103 days


#8 posted 03-08-2019 01:49 AM

The first image in the OP shows the riving knife bracket.

Bring that to a machine shop and have them cut the bottom surface at an angle, thinner at the rear (left in image), to no thickness removed at front (right in image).

That modification will increase the problematic clearance.

View Jason Lester's profile

Jason Lester

47 posts in 897 days


#9 posted 03-08-2019 02:05 AM



The first image in the OP shows the riving knife bracket.

Bring that to a machine shop and have them cut the bottom surface at an angle, thinner at the rear (left in image), to no thickness removed at front (right in image).

That modification will increase the problematic clearance.

- wingless

It is an old thread but you are thinking the way I am….I’m betting there is a spacer or something missing in the front. A small washer on the front bolt between the bracket and the base should do the same thing as machining it off. Then he could file the back part down if a washer in there bothered him.

Like I said I know its and old post too.

-- Jason

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