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My table saw maintenance day

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Forum topic by Holbs posted 05-30-2017 12:43 AM 850 views 0 times favorited 7 replies Add to Favorites Watch
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Holbs

1721 posts in 1865 days


05-30-2017 12:43 AM

When I won my Powermatic 66 at a local auction for $150, it actually was by accident because I didn’t believe it would go for that price (in the lot were 2 new with coating still on teeth Woodworker II’s, Biesemeyer cut off and auxiliary fence, bleh bleh bleh) and …well, it did. That is how I came to have both a Unisaw & PM66. I tore down and rebuilt my Unisaw as it came from a place that worked on…masonry I think. Lots of concrete glue and stuff (blog entry somewhere in my blog history). But I never did the same for my PM66, everything is AS-IS when I bought it home. Maybe I was a little burned out rehabbing machines (15” planer, 8” jointer, Unisaw, etc). I do plan on doing such (maybe this coming fall/winter to give me something to do).
I bought some 3/4” aluminum bars to make a DIY blade, miter slot, fence gauge. The first problem I had was the 3/4” barely fit in the middle of the table miter slot, but too wide at the ends. The side walls were …. gunky and slightly tapered in the ends. Out comes the 80 grit sandpaper. 3 hours later, I can happily slide the bar through both slots. And now I come to find out I was not crazy! My saw was trying to tell me something, and I was not listening as I thought it was my pushing lumber through the blade technique. From the front of the blade to the rear of the blade is 0.009” out , and from the front of the blade to the rear of my Sharkguard splitter, almost 0.015” out. I assume this is why my 4’ or longer rip cuts drifted to the left 1/16” or so off the fence. So now, have to find out how to align miter slot / table top to the blade. Is the same procedure as a Unisaw? Loosen bolts and whack (well, strongly tap) with a hammer?

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter


7 replies so far

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richardchaos

539 posts in 215 days


#1 posted 05-30-2017 12:56 AM

My poor misinformed friend. This saw was made in yet another Asian country. The saw blade will NOT align with the miter slots and the two miter slots will not be parallel to each other if their do consider yourself lucky! Your fence will also be off as well. I wish you luck on trying to get your Blade to be parallel with your miter slots. Which ever you choose to adduct to.

You may notice that as your miter gauge slides down the miter slot it will get TIGHT and then LOOSE as it travels down the slot! Damn Chinese political prisoners!

If it only cost you $150 I would work with it otherwise make it a boat anchor!

-- β€œIn a time of universal deceit, telling the truth is a revolutionary act.” ― George Orwell

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Holbs

1721 posts in 1865 days


#2 posted 05-30-2017 12:59 AM

Richard…Powermatic 66’s were made out of USA back in the day? Didn’t know that. If what you say is true about both miter slots not even parallel to each other (I did not check that), I’ll consider the left to be “master” slot as reference for alignment. Even if means a single miter slot bar for sleds. But you got me curious of both slots so will go check that :) Aligning the fence is no big deal, as long as I have a single miter slot as reference.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter

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MrUnix

5990 posts in 2034 days


#3 posted 05-30-2017 03:11 AM

So now, have to find out how to align miter slot / table top to the blade. Is the same procedure as a Unisaw? Loosen bolts and whack (well, strongly tap) with a hammer?
- Holbs

Yes, it’s exactly the same.

Cheers,
Brad

-- Brad in FL - In Dog I trust... everything else is questionable

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Holbs

1721 posts in 1865 days


#4 posted 05-30-2017 05:08 AM

Thanks Brad. Did just that. However, the PM66 only has 3 bolts to the table top. Took awhile to figure that out :) Got the alignment down to 0.001 across blade and Sharkguard from both miter slots. I’m happy.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter

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Roger

20874 posts in 2639 days


#5 posted 06-05-2017 12:00 AM

We all should have a “maintenance” day for all of our equipment at one time or another. By keeping our equipment “tuned”, we should have a safer and more enjoyable experience in our shops. Thnx for pointing out the miter slots being parallel to each other. I’m gonna check my Grizzly 1023. I’ll come back and let ya’ll know the outcome of the check.

-- Roger from KY. Work/Play/Travel Safe. Keep your dust collector fed. Kentuk55@yahoo.com

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Holbs

1721 posts in 1865 days


#6 posted 06-05-2017 12:01 AM

Roger: what do you use to check miter slots?

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter

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ArtMann

685 posts in 651 days


#7 posted 06-05-2017 12:34 AM

My experience has been that a table saw alignment is good for decades unless something unusual happens or the tool is moved to a new shop.

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