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Powermatic PM3000 and dado specs

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Forum topic by psient posted 06-03-2015 07:26 PM 878 views 0 times favorited 15 replies Add to Favorites Watch
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psient

82 posts in 1780 days


06-03-2015 07:26 PM

I have a new Powermatic PM3000 and a shop! I have a question for anyone with experience using this machine. It specs for a limit on dado diameter @ 8 inches. Talked to their tech support and they don’t know why this spec is listed with the machine.

Anyone ever use a 12” or 10” dado with it. I already have the dado set and can’t imagine it not working on this table saw.

Please let me know.

Thanks

Psient


15 replies so far

View knotheadswoodshed's profile

knotheadswoodshed

202 posts in 1640 days


#1 posted 06-03-2015 07:30 PM

what set do you have?
I can’t really picture a use for anything larger than an 8” set for most home/hobby users.
anything bigger is really slinging a lot of metal.

-- Randy - "I dont make mistakes, I make design change opportunities" www.knotheadswoodshed.com

View Fred Hargis's profile

Fred Hargis

3950 posts in 1960 days


#2 posted 06-03-2015 07:50 PM

Well, the new ones seem to be 7.5 HP. 14” saws….think that’s enough??? ;)
Hard to imagine (if that’s the one you have, I think earlier models came in 5 HP versions) it wouldn’t handle a 10” dado. I’d try it and see…a little common sense here goes a long way. Mount it, spin it by hand, then power it up. For them to spec a 8” set max for that saw had be a brain fart on someone’s part.

-- Our village hasn't lost it's idiot, he was elected to congress.

View BroncoBrian's profile

BroncoBrian

435 posts in 1425 days


#3 posted 06-04-2015 02:23 AM

Why would you use larger than an 8” stack? Isn’t that pretty standard even for 3 and 5HP saws?

-- Bigfoot tries to take pictures of me

View MrUnix's profile

MrUnix

4244 posts in 1666 days


#4 posted 06-04-2015 03:43 AM

If it says 8”, I’d take them at their word on it… I doubt some poor slob at the end of the telephone could tell you why through – they aren’t the ones who engineered the thing (and those are the only guys who could answer that question).

It does seem odd that a high horsepower 1” arbor machine couldn’t handle more though. But as Randy points out, that is a lot of mass to be slinging around. Maybe try to get your question asked further up the food chain at Powermatic and see if they can provide a reasonable answer.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View Fred Hargis's profile

Fred Hargis

3950 posts in 1960 days


#5 posted 06-04-2015 11:51 AM

I kept thinking about this and wonder if it’s a matter of the insert. If the insert opening is only large enough to let an 8” set be raised all the way…..please, I understand no ones cuts that way; but on my Unisaw the opening in the dado insert seemed to be sized to an 8” set. It may have been able to handle a 10” set, but it could have cut into the insert (I think, I sold that saw).

-- Our village hasn't lost it's idiot, he was elected to congress.

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psient

82 posts in 1780 days


#6 posted 06-10-2015 06:58 PM

Here’s the correct spec on dado size for my table saw . . . From Powermatic:

The dado is 12”.

Regards,

Gary Bellinger

Tech. Service Representative

Direct (800) 274-6846 X 1321

gbellinger@jpwindustries.com

JPW Industries

427 New Sanford Rd.

Lavergne,TN 37086

Phone (800)274-6846

www.jpwindustries.com

View Fred Hargis's profile

Fred Hargis

3950 posts in 1960 days


#7 posted 06-10-2015 07:11 PM

Oh, baby….that sucker is going to be expensive. Glad they got you the correct info.

-- Our village hasn't lost it's idiot, he was elected to congress.

View psient's profile

psient

82 posts in 1780 days


#8 posted 06-11-2015 05:57 PM



Oh, baby….that sucker is going to be expensive. Glad they got you the correct info.

- Fred Hargis


I already have the set. I haven’t used it as I just recently made a shop for myself. I need to make a sacrificial fence but haven’t decided on the actual design. At first it was gonna be hdpe but now I’m thinking just scrap. Maybe some doug fir I have laying around. The cut depth possible with the PM is over 4 inches.

View SirIrb's profile

SirIrb

1239 posts in 698 days


#9 posted 06-11-2015 06:08 PM

Side Note:

I lust after your saw.
50 shades of Gold.

Thats all.

-- Don't blame me, I voted for no one.

View psient's profile

psient

82 posts in 1780 days


#10 posted 06-12-2015 12:34 PM



Side Note:

I lust after your saw.
50 shades of Gold.

Thats all.

- SirIrb

Thanks for the response.
It’s quite powerful but still characteristically accurate. Very large blade(s). Needs 3 phase power so I have a rotary phase converter.
It’s really good for working with construction-sized lumber rather than cabinetry in particular. So working with beams is possible due to the depth of cut. Anyway that’s the theory.

View SirIrb's profile

SirIrb

1239 posts in 698 days


#11 posted 06-12-2015 02:49 PM

I am vary familiar with the PM 72 (green) and the 3k seems to be the new gen of it. We had that beast (12”- 14”, if I remember correct it would swing up to a 14”) hooked up with a 4 wheel powerfeeder. It would throw some serious chips. Watched my boss take the tip of his thumb off on it. Believe it or not the saw didnt even bog down on that. He didnt loose a digit or even part. Just the tip.

Side Note:

I lust after your saw.
50 shades of Gold.

Thats all.

- SirIrb

Thanks for the response.
It s quite powerful but still characteristically accurate. Very large blade(s). Needs 3 phase power so I have a rotary phase converter.
It s really good for working with construction-sized lumber rather than cabinetry in particular. So working with beams is possible due to the depth of cut. Anyway that s the theory.

- psient


-- Don't blame me, I voted for no one.

View psient's profile

psient

82 posts in 1780 days


#12 posted 06-13-2015 05:20 PM

So I tried to set up my Forrest Dado king 12244 12” dado. I cannot mount it as the saw arbor is not long enough. I will have to re-contact Powermatic to find out why the saw won’t accommodate this cutter. This makes no sense to me as I thought many people owned this saw. However, when it comes to using a dado it appears not-so-much.

The stack will attach without the outside blade washer with the arbor nut just reaching the end of the threads so that the arbor is flush with the nut face. I’d like to understand why this saw won’t accept the dado.

View MrUnix's profile

MrUnix

4244 posts in 1666 days


#13 posted 06-13-2015 05:49 PM

I notice that the specifications for that saw on the Powermatic web site now says it will take up to a 12” dado stack :) But it also says it can only do up to 13/16” wide… that Forrest can go up to 29/32” wide, so you won’t be able to do the full stack. Not sure I’m seeing what the problem is, other than you are trying to exceed the max dado width… am I missing something?

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View Fred Hargis's profile

Fred Hargis

3950 posts in 1960 days


#14 posted 06-13-2015 06:08 PM

It sounds to me like you’re OK. You don’t need the outside washer, and if the arbor nut is fully engaged you should be good to go. Pay attention to the width as Brad pointed out, it may be you have to back off one chipper…but it sounds like you’ve got it.

-- Our village hasn't lost it's idiot, he was elected to congress.

View psient's profile

psient

82 posts in 1780 days


#15 posted 06-13-2015 07:05 PM

OK I just figured out the problem I was having. It was not clear to me that the outer washer was unnecessary. I am glad you guys affirmed this conclusion independently.

I’ll reinstall the dado set w/o the washer. Previously I noticed that if I did not use the washer the entire set seemed to fit with the nut fully engaged. However, I did not try it out. This time I will.

Why the washer is not needed seems counter intuitive as the inertia must be greater using a dado than a single blade. I had to keep searching until I found several videos of guys mounting their dados and noticed no one was using the washer.

I wonder why no one mentions it and there was no mention in the literature either. It seems reasonable that someone who has never used a dado set before would NOT guess that the washer isn’t needed. Like I said, there is no mention of this commonly made. In my case, finding out the washer can be disregarded was not a study in quick access so much as it was one of careful observations.

Thanks for the help you guys. I’ll try to set it up.

Now I have to make an insert. I don’t have any baltic birch plywood. The plywood I do have has voids. I also don’t have a band saw or a sanding disc. I can clamp my belt sander to the table after shaping the insert with a jig saw.

Thanks again

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