Workshop #3: Craftsman 6 1/8 Jointer fail.

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Blog entry by Luke posted 05-12-2011 03:07 AM 1626 reads 0 times favorited 4 comments Add to Favorites Watch
« Part 2: Getting the Garage in Order Part 3 of Workshop series no next part

Yesterday my neighbor and I were getting ready to Joint some maple for his face frame, when I turned on the jointer, I noticed quite a bit of vibration, but I figured, the belt had been sitting for a while and probably just needed to be ran and formed.

I had spent a few weeks rehabbing this old jointer that I got on CL for $80. It was in good condition, came with the excessively large floor stand, I put some new blades in it, cleaned the top surface to a nice shine, removed all the gunk, aligned the motor and blade pulley to make sure the were coplaner and leveled the infeed and outfeed table.

I had used it last about a month ago for my workbench project, jointing some Doug Fir, and it worked like a champ, barely any vibration, sharp and smooth operation, just a blast to work with.

Yesterday, was different, perhaps my novice experience with V drive power tools, I figured that the belt had just held its shape and was causing some excess vibration that would work itself out through running.

Well turns out, the vibration go so bad it split the blade arbor pulley down the middle while running. Parts went flying!! That is the 2nd time parts have flown from this thing… (1st time was a loose blade SCARY).

Needless to say, we were done since we needed to joint and face plane the Maple for his face frame. I ordered the part from Sears. I am blown away that Sears still stocks parts for a 31 year old tool.

I will be investing in a power link vtwist belt as well.

4 comments so far

View Mark Shymanski's profile

Mark Shymanski

5621 posts in 3709 days

#1 posted 05-29-2011 03:11 PM

It is great that you can still get parts but you’ve got to wonder why it started vibrating in the first place. A belt shouldn’t take a pronounced set in just 1 month. Is there something loose? I’m thinking because it happened after it was working that something had a crack and it just cracked through and is now loose. I think I’d get rid of the vibration before I used it again.

-- "Checking for square? What madness is this! The cabinet is square because I will it to be so!" Jeremy Greiner LJ Topic#20953 2011 Feb 2

View Grandpa's profile


3259 posts in 2672 days

#2 posted 05-30-2011 02:02 AM

I think the sheave (pulley) was split and this caused the vibation, then it came apart. V-belts grip on the sides so if you had a split sheave and the sidewalls were pushing outward this would cause the vibration you described. Machined steel is always the best investment. Don’t go for the aluminum sheaves since these easily warp and bend. I live in a town of 23,000 people and we have an excellent belt and sprocket place that carries these with all kinds of diameters and bore pluse good belts. We seldom get a good belt for anything unless we find a speciality place like this.

View Luke's profile


290 posts in 2683 days

#3 posted 05-30-2011 03:18 AM

I would agree, being that the pulley pulled split down the casting seems like it was a logical area for fault. I did run through the bearings and arbor and all seems to be fine. I am looking at replacing the bearings though to help it run a bit smoother.

To be honest, I’m not sure how much more time I even really want to put into it, I bought it for a great price IMO, and I think I may turn around and sell it back on Craigslist and make a few bucks toward a longer bed jointer- I did install a new OEM pulley and it works just fine, all thought I have a bit of fear now every time I turn it on, I cringe a bit because of the past experience.

View Grandpa's profile


3259 posts in 2672 days

#4 posted 05-30-2011 07:08 PM

Sometimes these things get the best of us psychologically. Might be the best thing for you to do (sell it) and the longer bed is always better too.

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