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craftsman table saw 351.218330 riving knife

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Forum topic by marbles posted 02-10-2017 08:17 PM 1108 views 0 times favorited 5 replies Add to Favorites Watch
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marbles

3 posts in 308 days


02-10-2017 08:17 PM

Please bear with me. I am new to this forum and woodworking in general.

I recently purchased a saw second hand saw, Craftsman 10” table saw 351.218330, that works perfectly except for one flaw. I can’t adjust the riving knife so that it does not sit ON the saw blade. I can adjust it horizontally but cannot adjust it vertically. I can loosen the bolts and get the knife in the correct position but once I tighten down the bolts, it cinches itself to the blade. The previous owner said they never used the riving knife and was always in the down position. Yes, I have read the manual and no it does not offer any help. I’ve had several knowledgeable people, although nonprofessionals, look at this problem and are all stumped. Sears is of no help.
Yes I could use it without the knife but I would feel more comfortable using it since I am pretty new to this.

Has anyone else had this problem or have any ideas on what to look for?


5 replies so far

View MrUnix's profile

MrUnix

6006 posts in 2037 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

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marbles

3 posts in 308 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

17 posts in 323 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

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MrUnix

6006 posts in 2037 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

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marbles

3 posts in 308 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?

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