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Lengthwis ridges from grizzly helical planer?

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Forum topic by Jeremymcon posted 10-30-2019 01:28 AM 763 views 0 times favorited 19 replies Add to Favorites Watch
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Jeremymcon

378 posts in 1246 days


10-30-2019 01:28 AM

I had been eyeballing the grizzly 13” helical head planer for a out a year, and finally just decided to go for it! Well I was all excited to try it out tonight, fully expecting the glass smooth surface that all the online articles about helical cutter heads tll me to expect.

I ran a piece of birdsey maple through, knowing that my old planer chewed it up pretty badly. Well it did come out with minimal tear out, but I had some pretty significant ridges down the length of the board.

Is this normal for a helical planer? What can I do about it? In this Birdseye it’s still a better surface than my old planer gave, but in straight stock it’s going to be annoying to have to sand down all those ridges.

Straight knives:

Helical head:


19 replies so far

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Stephan in BC

13 posts in 2280 days


#1 posted 10-30-2019 09:23 AM

Let me guess, the helical head is only a couple inches in diameter with rotatable square carbide cutters? If so, then unfortunately yes this is a limitation of the design. I once had a helical head on the larger model of dewalt planer and had this issue too. I eventually went to a 20” straight knife machine and it solved my scallop issues EXCEPT it’s not as good with highly figured woods, which you already know.

-- Woodworking videos: https://www.youtube.com/AWoodworkersLife

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Fred Hargis

5843 posts in 3060 days


#2 posted 10-30-2019 10:25 AM

I have the Byrd head in my Delta planer and it does give the ridges, It’s my understanding that Byrd has redesigned their heads to eliminate this effect. One thing I did that reduced it was to remove each insert and clean the seat, then torque it to the correct tightness. It reduced it, but did not eliminate it. On the other hand it only take s few swipes (literally) with an ROS to remove them.

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

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Jeremymcon

378 posts in 1246 days


#3 posted 10-30-2019 11:46 AM

Huh. So pretty normal, I guess. Wonder why I had never heard of this effect before? Everybody raves about their helical planers, and here I am a little disappointed in the surface mine leaves. The ridges are large enough that I don’t think I’d want to face glue two boards together like I might do for laminated table legs.

I wonder if it’d help if I just run the board through the planer again without changing the depth? Would it maybe remove some of the high spots? Might try that when I can get back into the shop.

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WhyMe

1196 posts in 2127 days


#4 posted 10-30-2019 12:05 PM

I have a helical head on my 13” Dewalt and it cuts smooth. I don’t know what else to say.

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Jeremymcon

378 posts in 1246 days


#5 posted 10-30-2019 12:24 PM

Hmm… Maybe I’ll contact grizzly about this. See what they have to say. I mean, I just dropped like $800 on this thing with shipping. It ought to work.

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Robert

3571 posts in 2047 days


#6 posted 10-30-2019 12:47 PM

I have a Byrd head in my Grizzly jointer. The only time I’ve ever seen the ridges is when I rotated the cutters and didn’t have one seated down all the way.

The way you determine which cutter it is make a face pass, turn machine off and keeping board oriented the same way, rotate the cutter head until you find the cutter that matches the ridge. Loosen the cutter and reseat.

I would check this first I’ll be that’s what it is.

-- Everything is a prototype thats why its one of a kind!!

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Aj2

2574 posts in 2364 days


#7 posted 10-30-2019 01:03 PM

The bryd head in my Powermatic planer leaves the furrows rows. I’m on my second side of the second set. I’ve cleaned the seats and torqued them but I still see them. I think this will eventually be a failing. As each screw is potential failure :(
On some woods the rows show more.

-- Aj

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Jeremymcon

378 posts in 1246 days


#8 posted 10-30-2019 01:03 PM

But it’s not just one cutter – if you look at the picture it’s across the full width of the board! Could it be that every cutter is seated incorrectly from the factory? I guess I could check.

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Jeremymcon

378 posts in 1246 days


#9 posted 10-30-2019 01:24 PM

I’ll have to try it on another wood. Maybe on the soft maple, cherry, and Walnut that are my normal bread-and-butter woods it won’t be as noticeable as in this Birdseye hard maple…

View Jack Lewis's profile

Jack Lewis

535 posts in 1645 days


#10 posted 10-30-2019 01:28 PM

Rerun the board through a second time without changing the blades/cutters in a different position on the infeed table.

-- "PLUMBER'S BUTT! Get over it, everybody has one"

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Jeremymcon

378 posts in 1246 days


#11 posted 10-30-2019 01:29 PM



Run the board through a second time without changing the blades/cutters in a different position on the infeed table.

- Jack Lewis

I’m definitely going to try this when I get home. If that’s all it needs to come out smooth I can live with that.

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edapp

325 posts in 1996 days


#12 posted 10-30-2019 02:23 PM

my grizzly 1021×2 does not do this. I bought it over their other helical head models because it actually uses a shear cut/scalloped insert vs the square/straight inserts. I don’t know if that is causing the issue or not, but this is not something that you should have to live with just to reduce tearout… Id be returning that machine to grizzly if they claim it is normal and live with it.

only time I get ridges on boards is when I run a pass that is too light. If I don’t remove enough material it will leave indentions from the metal in-feed roller.

View RobS888's profile

RobS888

2620 posts in 2411 days


#13 posted 10-30-2019 02:30 PM



I have a Byrd head in my Grizzly jointer. The only time I ve ever seen the ridges is when I rotated the cutters and didn t have one seated down all the way.

The way you determine which cutter it is make a face pass, turn machine off and keeping board oriented the same way, rotate the cutter head until you find the cutter that matches the ridge. Loosen the cutter and reseat.

I would check this first I ll be that s what it is.

- Robert


I have a 12 inch jet jointer planer and noticed this when brand new.

-- I always knew gun nuts where afraid of something, just never thought popcorn was on the list.

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Jeremymcon

378 posts in 1246 days


#14 posted 10-31-2019 02:57 PM

I didn’t have time to go down to the shop and tinker with it last night, but grizzly tech support says they think the inserts might have been installed incorrectly at the factory, and that I should try to reinstall them and torque the screws at 50-55 in/lb. So I’m going to do that and see if it makes a difference. Hoping it does!

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BalsaWood

170 posts in 1725 days


#15 posted 10-31-2019 08:08 PM

I’m thinking there is something wrong with the cutterhead.

I put in a new helical cutterhead into my old planer and have not had any issues- no machine marks at all. I think the older versions of those cutterheads had those issues.

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