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I need to know how to adjust the blades on my powermatic model 50 jointer. Its an older model, I'm not sure what year. There are three blades and i need to know what position they need to be in compared to the infeed and outfeed tables.

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I usually adjust the knives slightly above the outfeed table. I use an aluminum straight edge & adjust them using a sheet of printer paper on the outfeed table so that they are about the thickness of the paper above the table. I place the paper on the outfeed table put the straightedge on the paper & rotate & adjust each knife so they just slightly hit the straightedge when I rotate the cutterhead by hand.

Needless to say the jointer needs to be unplugged while doing this.

Posted on Jul 08, 2010

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How do I adjust the worm gear on my table saw?

I believe that that model of Powermatic has a lock for the blade angle that also extends and retracts the casters for moving the saw. You may have unlock or change the handle position to allow for blade angle adjustment. You can get a manual or information at the Powermatic website to show you how to change the settings on the saw. Hope that helps.

May 28, 2014 | Powermatic Saws

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Spindle on 8" jointer locks up after one revolutionbut I can find no point of contact with either table.

Bite the bullet and take the blades out completely. If the blades are interfering, but you can't see where, you need a major blade reset anyway. And if the problem is not the blades, you would want to remove the blades to get at the problem (bearing?), just so you don't cut yourself anyway.

Jan 07, 2010 | Powermatic Masonry Tools

1 Answer


could be the way you are feeding/removing the board. snipe is actually the sound the board makes when its end passes over the cutter. the inboard table should be slightly lower than the rear table. pressure and movement must be maintained when feeding the board the entire length of the joiner table.

Oct 20, 2009 | Powermatic Masonry Tools

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Need manual for powermatic jointer model 60a

Try here. Otherwise please provide model number.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread. If I've managed to answer your question or solve a problem, please take a moment to kindly rate this post....thanks!

Mar 30, 2009 | Masonry Tools

1 Answer

Joiner not straight, this is a new machine (about 2 hours of use). The blades seem to be even with outfeed table, and I put steady pressure on the outfeed table but the board still does not come out...

New machines, particularly jointers, often require some tweaking to be ready for production. The quality control these days leaves something to be desired.
There are some basic steps you can take to see if it's ready, like raising the infeed table to zero (even with the outfeed table) and checking to see that the two are in fact straight inline with each other. This is a good indication that they will be parrallel when adjusted out of line to joint boards.
But it's worth the time it takes to go through all the stages needed to tune it up. And even with a well tuned jointer, there is a certain art to straightening long boards. The machine doesn't do it all by itself.
Perhaps you already know this.
You don't mention the model number, nor your experience or the length of boards you're attempting to straighten, so I'm not sure where to point you, but I would highly recommend you practice with some soft clear wood that is relatively straight until you get the hang of it.
If the machine is simply out of adjustment, (highly likely, as it just came from the factory), I would recommend you read a jointer tune-up tutorial and follow the steps to check the setup of your machine and correct any maladjustments that may be found while your warranty is still fresh. Some modern castings are not rested properly and warped tables have been the nightmare of more than one woodworker I know. Better to discover this while something can be done about it..
A good place to start would be Fine Woodworking, available at your local library or online @
Try to be patient. I've spent many days changing knives and shimming and adjusting my old powermatic over the years, but it's a pleasure to have straight boards when you go to glue up.
Best of luck to you!

Mar 25, 2009 | Delta Masonry Tools

1 Answer

Need to find out haw to adjust cutter head and blades.

I called Jet and they e-mailed me a pdf file with the older manual. There is a toll free number on their website.

Jan 26, 2009 | Delta Jointer Blades 6 Inch Fits , Jet...

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