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Powermatic 64A Blade alignment Problems

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Forum topic by Shawn1 posted 11-15-2019 04:03 AM 164 views 0 times favorited 4 replies Add to Favorites Watch
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Shawn1

4 posts in 3998 days


11-15-2019 04:03 AM

Topic tags/keywords: blade alignment link bars powermatic64

I’ve read some posts on blade alignment on the PM 64A here and across the internet and have concluded my issue is not uncommon. Having owned this saw for over 15 years, I’ve had no issues until recently. The rear of the blade is closer to the miter slot than the front by 0.005” confirmed by a dial indicator. I’ve made sever attempts to adjust the trunnion set screws to bring the table back into alignment but even if I get it, it tends to revert back to the original position and it’s nearly impossible to get true zero, front to back.

Another weird thing happens following successful blade straightening with the blade at full height. As I lower the blade back down to my operational height (1-3”), the blade somehow drift back towards the miter slot. I tried another blade and it did the same thing. And I did check for square, which it was. So basically the blade will only maintain a ‘straight’ position while it’s at max or near maximum height.

I spoke briefly to Powermatic today who suggested the trunnion adjustment is not what I should be adjusting but rather the link bars. aka Tie bars on the delta. I’m not entirely clear what I’d be doing there, so I’ll probably contact them again tomorrow for more clarification. Also the nuts on the back of the saw on the link bars are incredibly hard to loosen and very difficult to get wrench on them. I’m open to your expert opinion as well…

Finally, I think the PALS will be worth trying. I will be purchasing a set to see if that does it. Looking forward to any feedback or suggestions.

Shawn


4 replies so far

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therealSteveN

4318 posts in 1136 days


#1 posted 11-15-2019 04:52 AM

The problem is known. It isn’t just a 64A thing either, it’s a contractor saw thing. You can spend a lot of time playing with it to get it right.

The Solution, and a pretty cheap one at that. On this site, look under Education. These folks not only make the fixes as well as can be made, they also address education pretty well. The video section is where to head right now, but they have some nice insights elsewhere.

-- Think safe, be safe

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Shawn1

4 posts in 3998 days


#2 posted 11-15-2019 01:08 PM

Thanks for the response. I did read that Fine Woodworking Article which was pretty informative and validated my frustrations. I’m going to order a set of the PALS today. We’ll see what happens. Thanks again!

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fivecodys

1532 posts in 2198 days


#3 posted 11-15-2019 11:20 PM

Yep, Contractor PALS worked great on my 64A. Mine was fine for years and then it started to slowly creep out of alignment. The PALS was fairly easy to install and adjust.
I have a review here: https://www.lumberjocks.com/reviews/11625

I built the jig shown in the review and that really helped.
This is a totally fixable issue.

-- When you leave your shop for the night, make sure you can always count to 10.

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Shawn1

4 posts in 3998 days


#4 posted 11-16-2019 03:43 PM

I’ve got them on order! thx

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