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Controlling Squeeze-out

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Forum topic by DevinT posted 05-10-2021 08:02 PM 907 views 0 times favorited 64 replies Add to Favorites Watch
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DevinT

1168 posts in 85 days


05-10-2021 08:02 PM

Squeeze-out is pretty easy to tackle. Just run a chisel under it after about 20 minutes. However, it’s not always feasible to get at the squeeze-out with a chisel.

What do folks think about the idea of engraving a channel about 3/4” from the edges before glue-up to control the flow of excess glue? Not a deep groove, maybe 1/128” to 1/64” deep. Not sure how deep. We’re talking Titebond III as the glue in most cases between two pieces of wood laminated by their faces.

I would make the groove using my router with a 60-degree V-groove bit.

-- Devin, SF, CA


64 replies so far

View sras's profile

sras

6175 posts in 4248 days


#1 posted 05-10-2021 08:10 PM

I’ve seen this done before. The example I saw left about 1/16” of wood past the groove.

-- Steve - Impatience is Expensive

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Rich

6929 posts in 1708 days


#2 posted 05-10-2021 08:12 PM

That is actually a tried & true method that’s been around for years. Pretty creative for you to come up with it on your own. I’m impressed.

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

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Craftsman on the lake

3864 posts in 4556 days


#3 posted 05-10-2021 09:59 PM

I find that wiping it off with a damp rag works good.

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

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DevinT

1168 posts in 85 days


#4 posted 05-10-2021 10:08 PM

sras, thanks, so I don’t need to be so far from the edge. That’s great to know.

Rich, lol, I thought I was being ultra clever. Was calling them “glue channels”.

Craftsman, it sounds so easy. Should I be concerned about raising the grain due to the moisture in the rag?

-- Devin, SF, CA

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DevinT

1168 posts in 85 days


#5 posted 05-10-2021 10:08 PM

I think it might even strengthen the bond compared to just surface mating.

-- Devin, SF, CA

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Desert_Woodworker

7046 posts in 2333 days


#6 posted 05-10-2021 10:58 PM

Interesting post- would this method help…

Glue squeeze out

https://www.youtube.com/watch?v=BnnRwitZwHI

-- Desert_Woodworker

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Rich

6929 posts in 1708 days


#7 posted 05-10-2021 10:58 PM


Rich, lol, I thought I was being ultra clever. Was calling them “glue channels”.

- DevinT

Indeed. I was commending you for cleverness. You did come up with the idea on your own after all. Reminds me of that time I figured out a quick way to add sequences of numbers only to find out that Gauss had beaten me to it by a couple hundred years.

Regarding strength: you’d have to do some tests, but I’d be surprised if it was any stronger.

Regarding wiping with a damp rag: that topic will open up a huge can of worms around here. Besides, isn’t it better if you don’t have any squeeze out in the first place?

-- Half of what we read or hear about finishing is right. We just don’t know which half! — Bob Flexner

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SMP

4153 posts in 1024 days


#8 posted 05-10-2021 10:59 PM



I think it might even strengthen the bond compared to just surface mating.

- DevinT

Thats what she said.

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DevinT

1168 posts in 85 days


#9 posted 05-10-2021 11:19 PM

LoL, ‘bout fell over. Good one!

-- Devin, SF, CA

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Bstrom

360 posts in 292 days


#10 posted 05-11-2021 12:12 AM



I think it might even strengthen the bond compared to just surface mating.

- DevinT


I’ve been under the impression a thin, molecular layer is what creates the best bond – even squeezing the joint too much with clamps is self defeating, but a collection of glue in a channel or any unjointed surface is not going to bring any strength to a joint. Correct me if I’m wrong…

-- Bstrom

View pottz's profile

pottz

17568 posts in 2103 days


#11 posted 05-11-2021 12:22 AM

im with craftsman just use a damp rag and wipe it off,anything more and im irritated-lol.

-- working with my hands is a joy,it gives me a sense of fulfillment,somthing so many seek and so few find.-SAM MALOOF.

View Wood_Scraps's profile

Wood_Scraps

155 posts in 138 days


#12 posted 05-11-2021 12:28 AM



im with craftsman just use a damp rag and wipe it off,anything more and im irritated-lol.

- pottz

Agreed. Don’t need to add complexity and additional steps.

Only other thing I’ll do is trim the end of a drinking straw into a V. Then run it along the joints when I get squeeze out. Easy way to clean up most of it. Then a damp rag for a final wipe down.

View HowardAppel's profile

HowardAppel

88 posts in 4153 days


#13 posted 05-11-2021 12:34 AM

As a worshiper of the Norm Abrams School, I agree with him that wiping the wet glue with a damp/wet rag gets some glue off but succeeds in spreading glue over bare wood which needs to be sanded off before finishing, often difficult in corners. Sadly, I can confirm this happens, as I discovered many years ago.

View Madmark2's profile

Madmark2

2841 posts in 1707 days


#14 posted 05-11-2021 12:54 AM

The easiest way to control squeezeout is to use less glue!

A little squeezeout is just what you want to see. If you’re getting drips & runs you’re using too much glue!

You want 100% coverage without drips & runs. Use a piece of lexan to spread the glue in a thin, even layer. Hold the lexan at a slight angle as you draw it along the edge. You want a layer just thick enough to obscure the grain but not so much as it starts to bead.


Slight squeezeout without drips.


What little squeezeout there is shrinks back as the glue dries.

-- The hump with the stump and the pump!

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pottz

17568 posts in 2103 days


#15 posted 05-11-2021 01:04 AM



As a worshiper of the Norm Abrams School, I agree with him that wiping the wet glue with a damp/wet rag gets some glue off but succeeds in spreading glue over bare wood which needs to be sanded off before finishing, often difficult in corners. Sadly, I can confirm this happens, as I discovered many years ago.

- HowardAppel


+1 thats very true,you gotta get it all off.

-- working with my hands is a joy,it gives me a sense of fulfillment,somthing so many seek and so few find.-SAM MALOOF.

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