Tool Safety #1: How "smile" a Ridgid jointer knife or two...

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Blog entry by jack1 posted 07-04-2011 05:58 AM 7064 reads 1 time favorited 20 comments Add to Favorites Watch
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It seemed simple enough. Take out the old blades, replace with new ones, screw em’ in, turn on the unit and… BLAMMMMM!!! All hell breaks loose and I’m REALLY glad I replaced the safety shield on the unit. There are blades flying around below the beds and sparks, and… What in the heck happened??

I was not being a typical “man”, but actually read the directions, three times! Are the wood gods out to get me cause of all the wood putty I’ve used?? Have I failed to pay my taxes?? Did the sun rise in the west?

No, not that. Turns out the owner’s manual skipped one little bitty word on the diagram. “Jack”, yeah, my name, they forgot to label the screw as the “Jack Screw” described in the directions but, not to be found in the diagram…
Scary, no doubt.
I’ve been fortunate to only router a couple of fingers on my router table so far and didn’t want to add a (no doubt) “masculine” looking scar to my face from the jointer or any other bit of machinery I have. I know it adds character but as most of you know, I already have enough character as I am now…
I ordered a second

new set of blades (freud) and put them in on top of the the “jack” screws (I guess), turned on the monster and voila! No flying razor blades… ;0) Someone needs to inform Ridgid that their owner’s manual is not specific enough for this operation. Maybe it’s time to trade up to a 12” Delta or… ;0)
Anyways, be careful if you have one of these especially the model before the newest version…



The second picture shows the first set of blades totally mangled but not easily seen… As you see, I also tried using the new Rockler jig too.

-- jack -- ...measure once, curse twice!

20 comments so far

View pintodeluxe's profile


5798 posts in 3019 days

#1 posted 07-04-2011 06:05 AM

Yes, jointer maintenance can be a little tricky.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View Joe Lyddon's profile

Joe Lyddon

10334 posts in 4258 days

#2 posted 07-04-2011 06:16 AM

Glad it all came out OK… without injury…

-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: ... My Small Gallery:"

View Woodbutchery's profile


414 posts in 3792 days

#3 posted 07-04-2011 06:22 AM


Glad you had the safety shield on.

-- Making scrap with zen-like precision - Woodbutchery

View scarpenter002's profile


606 posts in 4111 days

#4 posted 07-04-2011 06:41 AM

Glad to hear you came out uninjured.

-- Scott in Texas

View Beginningwoodworker's profile


13345 posts in 3879 days

#5 posted 07-04-2011 05:46 PM

Glad, you was not hurt.

View Chipy's profile


374 posts in 2799 days

#6 posted 07-04-2011 10:52 PM

The good to come from all of this is you can keep someone else from getting injured.I have the same machine and you have saved me possible injury and damage to my machine.You can bet I will be taking steps to keep this from happening as well.Glad your not injured and it takes guts to admit something went wrong thanks jack1

View jack1's profile


2117 posts in 4233 days

#7 posted 07-05-2011 10:55 PM

Thanks guys. By the way, the “jack” screws are at the bottom of the slot that holds and are used to level the blade. They have an allen opening type of screw (2mm maybe). If I get another jointer, I’m going to save for one that has all the little blades that self index…

-- jack -- ...measure once, curse twice!

View Jonathan's profile


2609 posts in 3256 days

#8 posted 07-06-2011 01:47 AM

Yikes! Glad the biggest issue here was having to buy another new set of blades, rather than a trip to the ER. As Chipy stated, it’s nice that you posted this, as you may save others from the same problem.

-- Jonathan, Denver, CO "Constructive criticism is welcome and valued as it gives me new perspectives and helps me to advance as a woodworker."

View Napaman's profile


5530 posts in 4283 days

#9 posted 07-07-2011 06:23 AM

scary…glad you are okay.

-- Matt--Proud LJ since 2007

View mcoyfrog's profile


4542 posts in 3800 days

#10 posted 09-15-2011 08:51 PM

Crikee thats scary, glad it all turned out in the end…

-- Wood and Glass they kick (well you know) Have a great day - Dug

View whitewulf's profile


454 posts in 3143 days

#11 posted 08-25-2012 11:22 PM

As I understand, u set the blades all way down in slots passed the Jack screws?

-- "ButI'mMuchBetterNow"

View jack1's profile


2117 posts in 4233 days

#12 posted 08-26-2012 08:35 PM

Yes I did. Doh!

I did spend some $$ and got a special jig that self centers my new blades. Works like a champ and the jointer works like new!

-- jack -- ...measure once, curse twice!

View whitewulf's profile


454 posts in 3143 days

#13 posted 08-27-2012 07:53 PM

Does the jig measure the height with indicator or edge, while on the jack screws? if it uses magnets, the blades can move down,and loosen. The screws prevent this, Magnets are quicker but NOT as safe, Trust me!

-- "ButI'mMuchBetterNow"

View jack1's profile


2117 posts in 4233 days

#14 posted 08-27-2012 10:38 PM

No, they sit in indexed slots so they can’t move. I thought I posted on the company whose name I forgot. I’ll have to get the box. Not cheap like I said but accurate and safe.
They advertise in some of the wood magazines. German made I believe.

-- jack -- ...measure once, curse twice!

View whitewulf's profile


454 posts in 3143 days

#15 posted 08-28-2012 07:24 PM

What I meant t say, the jack screws prevent the blades from slipping deeper in the slots.

The jig you show looks like Magnetic one, to me. As blades get narrower from sharpening the magnets hold the blades up off of the jack screws.

-- "ButI'mMuchBetterNow"

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