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Jointer outfeed hold down

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Forum topic by rwe2156 posted 06-21-2015 11:19 AM 1483 views 0 times favorited 13 replies Add to Favorites Watch
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rwe2156

2187 posts in 940 days


06-21-2015 11:19 AM

After a particularly aggravating jointing session with some long, twisty stock, I’m wondering if some kind of stock hold down apparatus over the outfeed table would be a benefit, particularly with long stock.

I’m thinking of something like the board buddies or a wide feather board type thing you could clamp to the fence maybe. I’m thinking you could use a push block behind the wood, not on top of it, then as the last few inches is fed just basically pull the stock through.

Any comments?
Has anyone done anything like this?

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


13 replies so far

View DIYaholic's profile

DIYaholic

19172 posts in 2135 days


#1 posted 06-21-2015 04:32 PM

Great question.

I have a Grizzly “Baby” power feeder, that I want to use on my jointer’s outfeed.
http://www.grizzly.com/products/Baby-Power-Feeder/G4173

I figure that it will provide consistent down pressure along with stock feed….
Thusly, eliminating stubby digits, oh…. and better results!!!
I’ve seen them installed on jointers, sooooo….

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

View AlaskaGuy's profile

AlaskaGuy

2406 posts in 1769 days


#2 posted 06-21-2015 05:13 PM

Not that I have you answer but some more information may be helpful.

How long are you jointer tables?
How long are the board you’re trying to joint?
How thick are the boards?
How twisted and bowed are the boards?
What finished thickness do you want?
Have you cut the board to final length + an inch or two.

-- Alaskan's for Global warming!

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rwe2156

2187 posts in 940 days


#3 posted 06-22-2015 05:49 PM

Table is about 60” long.
I was jointing rough 5/4 boards about 6” wide.
They were about 1/4”+ twisted.

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

View AZWoody's profile

AZWoody

693 posts in 684 days


#4 posted 06-22-2015 05:57 PM

I joint some very irregular boards that come off the drying piles and if I were to use a power feeder, or some kind of feather board setup like on a router table, all that would happen is the board will just twist as it’s being fed through.

If the low side is towards you, and the high side on the back, then the hold downs will just put pressure and hold down the high side and raise the low side up as it’s going through. That would actually make the twist worse.

It’s kind of the same principle why feeding twisted boards through a planer won’t flatten them unless there’s a sled under them supporting the high parts.

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rwe2156

2187 posts in 940 days


#5 posted 06-22-2015 08:45 PM

AZ I get what you’re saying cause to get the twist out you have to keep the opposite sides down as it goes through.
Duh….

But lets say its not a twisted board.

My little problem is on a long board holding the outfeed wood down with while trying to feed the wood is very difficult not to avoid pushing down on the board and if its bowed you’re just planing it not jointing it.

I’ve tried waxing the tables it helps a little but the problem still remains that on a long board you’re trying to keep the outfeed section down flat while feeding from the infeed side. If I had a 7’ reach I could do it.

Am I making any sense here?

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

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AZWoody

693 posts in 684 days


#6 posted 06-22-2015 09:26 PM

For long boards, I do understand. I come across that issue as well.

I do know in a lot of big shops, sometimes jointing large boards is a 2 man job but yes, if the board is “flat” then some kind of hold down would do.

The reason I said it wouldn’t work for twisting was because that was your first example you used and on your follow up, you also said the boards were twisted.

As for power feeders, I’m really curious how they’re set up to be able to keep a board flat as it’s going over and not just following the curves as it’s coming over. Also, too much pressure is not good for jointing either. I just try to let the weight of the wood keep itself down.

View DIYaholic's profile

DIYaholic

19172 posts in 2135 days


#7 posted 06-22-2015 09:42 PM

I found these images of power feeders on the interwebby….

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

View Randy_ATX's profile

Randy_ATX

835 posts in 1902 days


#8 posted 06-23-2015 12:15 AM

I’m going to watch this topic. I’ve got some 15’ long old heart pine flooring I salvaged. I want to eventually run it, top surface facing down, over a jointer. My concern is also keeping it held down flat on the outfeed since the boards are so long.

-- Randy -- Austin, TX by way of Northwest (Woodville), OH

View runswithscissors's profile

runswithscissors

2176 posts in 1485 days


#9 posted 06-23-2015 07:17 AM

I keep eyeing my jointer and my 1/4 hp power feeder wondering whether to try this. Haven’t decided yet, though I usually cave in to these notions and make a stab at them.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

View Chemrick's profile

Chemrick

7 posts in 543 days


#10 posted 06-23-2015 11:14 AM

Would a planer sled not be better for twisted boards? I haven’t really had good luck getting twist out of a board on a jointer unless it’s a pretty short board and it’s not very much twist. Seems like a feeder would make it even less effective on twist because it will just smash it down as it feeds it.

View WoodNSawdust's profile

WoodNSawdust

1417 posts in 636 days


#11 posted 06-23-2015 02:09 PM

I learned to cut the stock to rough length before joining as this reduces waste.

How about an outfeed table the same height as the outfeed way so you don’t have to overcome the weight of long stock?

-- "I love it when a plan comes together" John "Hannibal" Smith

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rwe2156

2187 posts in 940 days


#12 posted 06-23-2015 02:27 PM


Would a planer sled not be better for twisted boards? I haven t really had good luck getting twist out of a board on a jointer unless it s a pretty short board and it s not very much twist. Seems like a feeder would make it even less effective on twist because it will just smash it down as it feeds it.

- Chemrick

The thread question changed a little we’ve concluded it won’t work on twisted boards, so the question being addressed is using for long boards with little to no twist.

Planer sleds work, but there is a technique to get twist out on a jointer that’s pretty easy.
You have to keep pressure on opposing down corners and just keep running it through the take the low points off. I set my knives fairly heavy cut to start (watch grain direction) and go shallower as the board levels out.

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

View Bluepine38's profile

Bluepine38

3341 posts in 2545 days


#13 posted 06-23-2015 03:33 PM

A friend has a 8” Delta long bed jointer on a heavy home made base. The steel top of the base is drilled
with mounting holes for his powerfeeder and he has overhead tracks for a small lifting system so he can
take the power feeder from his shaper and move it to the jointer when he is running long stock. He
usually has a helper so he does not have to run from infeed to outfeed end and the feeder sets above
the knives. It is a good setup and works OK.

-- As ever, Gus-the 77 yr young apprentice carpenter

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