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Old Mar 15, 2015, 09:46 AM
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Laminating Depron

Hi guys,

Need to laminate 3 pieces of depron to make a forward fuselage on a depron profile kit. I'd like some opinions on the best way to accomplish this task.

Thanks in advance for everyones input.

Brian C
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Old Mar 15, 2015, 10:16 AM
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An itch?. Scratch build.
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There are a few threads below in the 'Similar Threads' list.

I generally use UHU Por thinly spread on both surfaces, keeping away from the edges if they are to be sanded.
You could use epoxy if greater strength is required.
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Old Mar 15, 2015, 03:58 PM
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I have used white Gorilla Glue to laminate, I run a Top Flight Woodpecker http://www.rcplanet.com/ProductDetai...FdgNgQodQAkANA over the surface first, then wet one side and spread the GG on the other side, getting the GG thin so there is not too much is key, it is best to weight down the parts while thy dry, painters tape around the edges will help control the foaming.

Mike
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Old Mar 15, 2015, 04:26 PM
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Larry........... parkflyer
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Is white gorilla glue wood glue? That is all that I see around here. I use regular GG for laminating following the same recommendations as Mike, except the woodpecker, but that is a great idea.

I have heard of some using Scott77 but that is real tricky when you get just a little too much in one spot..... it DOES eat Depron if too much is used.
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Old Mar 15, 2015, 06:13 PM
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White Gorilla Glue is a wood glue it does not foam up as much as the brown, and it dries faster.

Mike
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Old Mar 16, 2015, 07:47 AM
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Canadian Bacon
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I use this Lepages Green contact cement. It's water based so won't hurt any foam. Spread thin on both sides, let sit for 15 mins. and carefully line up, as once they touch, it's there to stay.

Gord.
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Old Mar 16, 2015, 08:19 AM
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3M 45 spray adhesive works well.
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Old Mar 19, 2015, 03:36 PM
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Check out the grain too. Depron has a grain, similar to wood. Swap this grain 90 degrees to have equal strength in both directions.
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Old Mar 19, 2015, 08:51 PM
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Glidden 'Gripper' Latex primer.
Very few products perform better.
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Old Mar 20, 2015, 07:29 AM
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Agreed !!! Yes, the Gripper works Great , especially given a proper drying time ... We’ve recently laminated two Blucor (old stock) Profile F-14’s , two A-12’s , and a Foam EZ canard made from real (actually used ) meat trays from the grocer. We clamp for overnight.
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Old Mar 20, 2015, 09:05 AM
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Have always used 3M77 , not hard to spray lightly don't understand why everyone makes a big deal about using it. Excellent bonding and quick!
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Old Mar 20, 2015, 11:19 AM
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Quote:
Originally Posted by Ralph A. D'Amelio View Post
Have always used 3M77 , not hard to spray lightly don't understand why everyone makes a big deal about using it. Excellent bonding and quick!
I just did a test lamination of some scrap 3mm depron with 3M77. Worked fine, the bond is impossible to separate and didn't eat the foam. Seems OK to me.


Mark
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Old Mar 20, 2015, 04:30 PM
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I've used 3M77 spray adhesive for the past 4 years to build Depron planes. The one's I haven't crashed to destruction are still bonded strongly and I've never had it eat the foam.

Cheers!
Randall
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Old Mar 21, 2015, 08:11 AM
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The folks who grew up with Light Socket protectors and Child seats are mostly
worried about the 3M77 Fumes.
And I suppose that Folks who ARE sensitive DO have a point.

I've used 3M77 for years in well ventilated conditions.

Careful choosing Gorilla White as there are TWO types.
One is water based like alphatic resins and NOT good for laminating.
The other is Clear, 2oz for $5, that is essentially a PU type and it SELF CURES but foams.
I think it's called fast set.

Bob
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Old Mar 21, 2015, 12:35 PM
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I have never used depron but Elmers adhesive spray works on Dollar tree foam board. I removed the paper first to test it
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