Jet 6" JJ6 Jointer #1: just picked up a jointer

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Blog entry by Camper posted 09-29-2010 11:05 PM 9267 reads 0 times favorited 11 comments Add to Favorites Watch
no previous part Part 1 of Jet 6" JJ6 Jointer series Part 2: frankenjointer... »

Thanks to your advice and recommendations Lee and Wayne in the previous post . I picked up a used jointer for $90 that I think is in decent condition. The motor seems to be working fine with out any out of the ordinary noise or vibration. Actually its surprisingly quiet when I am not jointing anything. The bed and the fence are cast iron and flat. The fence needs some adjusting as it is not exactly 90 when measured with a square. Here are some pictures.

Naturally I have some questions :)

1. It seems like the blades will need sharpening or replacement. See the first picture below. What type of places would sharpen these blades? or would a replacement me a better idea? The owner said they were never sharpened before.

2. When I jointed a rough board there was significant chatter. Is this normal? It felt like maybe it was cutting too deep or is it just my technique that needs improvement?

3. Anyone have a manual for it where i can figure out how the adjustments for the infeed and outfeed tables work? I have looked all over on line and can only find the manuals for the never models. OWWM did not have anything on Jet which surprised me. There are two knobs on the back side, a pair for each table (see second picture below) and 2 in the front as you can see in the first picture above. I am not sure what these are for..

thanks in advance

-- Tampa-FL

11 comments so far

View HokieMojo's profile


2104 posts in 3724 days

#1 posted 09-29-2010 11:28 PM

you could sharpen your blades yourself.

If you want to send them out, you could send them to forrest. Just google forrest sharpening services.

nice find and thanks for posting pics!

View SnowyRiver's profile


51457 posts in 3477 days

#2 posted 09-29-2010 11:41 PM

Congrats on the new tool. I was thinking maybe the chatter is coming from the dull, chipped, or misaligned blades. You might try sending Jet an email and see if they know where to get a manual. Sometimes the factories know who sells the stuff. Sounds like you got a good price.

Sometimes they have blades for jointers and planers on Ebay.

-- Wayne - Plymouth MN

View Beginningwoodworker's profile


13345 posts in 3669 days

#3 posted 09-30-2010 12:02 AM

Congrats on your new tool.

View Howie's profile


2656 posts in 2919 days

#4 posted 09-30-2010 12:27 AM

The knobs are more than likely for table adjustment.
If you are getting chatter you are probably taking too much off in one pass. 1/16 or less per pass is best in MHO.
A few tweaks and it looks like you got a bargain.

-- Life is good.

View Abbott's profile


2570 posts in 3300 days

#5 posted 09-30-2010 12:30 AM

Very nice, it would be tough to beat that price!

-- Ohh mann...pancakes and boobies...I'll bet that's what Heaven is like! ♣ ♣ ♣ ♣

View lanwater's profile


3111 posts in 2930 days

#6 posted 09-30-2010 12:53 AM

I have similarknob on the same locations on my delta 6” jointer. The knob are for adjusting the table.
The one on the side is for locink/unlocking the table and the one in the front-middle is for height adjustment.

-- Abbas, Castro Valley, CA

View Lee Barker's profile

Lee Barker

2170 posts in 2847 days

#7 posted 09-30-2010 12:59 AM

Great score, camper! The deal o’ the day for sure.

I think I can help with several of your questions.

The knives should look razor sharp. They’re not. They’ve got to come out and be sharpened. I don’t recommend doing this yourself, especially if oodles has to be taken off to get rid of nicks. Try the yellow pages for “sharpening.” The way these are done, usually, is they are all lined up in a jig and all ground at the same time so they have precisely the same angle and end up the same size (weight). It’s a pro’s job.

Jointers are very generic; I wouldn’t obsess about an owner’s manual. In fact, try for an older Delta or Rockwell. OWWM pix will get you a model number. You’ll learn about gib screws on the ways (the allen screws under the black plastic knob) and what they do, and how to adjust the tables and all that.

To remove the knives: there will be probably three bolts (machine screws) barely visible behind the knives. These thread into the gib, (a different gib from above) which exerts even pressure to keep the knife tight in the slot. These bolts need to be turned into the gib to loosen the knife. You may have to grind one of your open end wrenches thinner to fit into the slot.

The knives may have springs, flat or coil, under them. probably not, that vintage, but be aware. You’ll likely want to remove the entire gib with bolts and the knife to clean the slot and the parts.

Wrap those knives in something and boy howdy now you’re on your way to the sharpener!

One more hint while you’re at this stage: I stamp a unique number on each slot with a number stamp (duh, Lee). It helps keep track when you’re reassembling and haven’t snugged up all the bolts, and it also helps when you want to loosen one knife and slide it hither or yon to eliminate a new nick showing up on your boards. You do 1 the first time, 2 the next, all right, everybody, all together, “Duh, Lee.”

-- " his brain, which is as dry as the remainder biscuit after a voyage, he hath strange places cramm'd with observation, the which he vents in mangled forms." --Shakespeare, "As You Like It"

View mrg's profile


823 posts in 2996 days

#8 posted 09-30-2010 01:49 AM

If you call Jet they will be able to send you a manual. Called customer service for the size bolt heads for the blades and they had no issue giving me the spec.

The model number should be stamped on one of the plates in the front. If you need a place to get blades for the jointer I can send you an address for them. The blades are 20 – 30 dollars. If you order them from Jet they are 75. These are the same blades.

Here is the link to Jet Tools manual page.

-- mrg

View Retseih's profile


27 posts in 2839 days

#9 posted 09-30-2010 03:35 AM

awesome link mrg….I think I will download my performax manual.

-- Palmer Divide Woodworks--Where steel collides with wood

View RonPeters's profile


713 posts in 2877 days

#10 posted 09-30-2010 03:54 AM

Nice score. I have a newer version of that planer.

I find that taking a small bite works the best.

-- “Once more unto the breach, dear friends...” Henry V - Act III, Scene I

View Camper's profile


232 posts in 2852 days

#11 posted 10-01-2010 02:17 AM

Thanks a lot for all the feedback.

First off let me give props to Jet. I e-mailed them last night and today they sent me a pdf of the manual they had on file. Definitely living up to the fine reputation they have built. the representative also asked me to contact her if I had any questions.

Before I received the e-mail, I looked around and found great similarity with this model (JJ-6)and Delta 37-220 and Jet JJ-6CSX both of which have manuals available on the web. The latter is a newer model and the manual is very well written.

Hookie and Abbas, I am not sure that I have the abilities or the set up to sharpen the blades so they are gona be sent out. I heard that this place is a reputable place with reasonable prices (50cents/inch) but have not called them yet. Looking to find a local place. Ace hardware does sharpening but I am not sure I trust them. new blades are around $20 which is an option.

Wayne, the source of the chatter could be any of the things you suggested. It definitely is not smooth like the jointers I have seen on youtube. I guess we will see.
, it seems like the from ones are for table height adjustment, and the side ones are for locking the tables. Have not figured out the two by the belt but the manual should help. I am hoping the same, a few adjustments and sharpening and it should all be good.

Lee, thanks again for your detailed and humorous post. I think between what you describe and the manuals I should be OK. Quick question though, do I need to mark anything before I take the knives off? I have read a couple of places that I should mark the TDC….just not sure…the manuals did not say anything about that..

Mrg, you guessed it, Jet came through :)

and finally Wayne, Beginningwoodworker, Abbot, Lee and Ron, thank you for your kind words. I think it is a good machine and the owner (previous) was very kind to let me have it.

I will try to document the process as I figure it out…probably with more questions than documentation.

time to go look at the manuals….

-- Tampa-FL

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