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glue for different

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dericcio2
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glue for different

Postby dericcio2 » Fri Jan 08, 2021 11:00 pm

Dear builders,
which glue do you suggest to join paulownia and foam (XPS etc..) possible easy to find in Germany.
I would not use epoxy because need something that fill small gaps because of not perfect cutting.
Something with glueing time more then 20min

PrfctChaos
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Re: glue for different

Postby PrfctChaos » Sat Jan 09, 2021 12:05 am

In the past Ive used Epoxy, thickened with microballons, between foam and pauwlonia.

May consider Polyurethane as well. Curing time will be quite long though, as in a day or two most likely.
Last edited by PrfctChaos on Sat Jan 09, 2021 2:13 am, edited 1 time in total.

Herman
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Re: glue for different

Postby Herman » Sat Jan 09, 2021 12:16 am

In the long ago past i.have used epoxy with microbubbles or colloidal silica. Can't remember which I preferred.

tmcfarla
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Re: glue for different

Postby tmcfarla » Sat Jan 09, 2021 1:36 am

If you don’t want to use epoxy, gorilla glue (polyurethane glue, if that brand isn’t in Germany) might work. I used it to attach to foam sheets for a board build, and it has held up well. It expands so it will fill gaps, but you need to clamp it down.

fluidity
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Re: glue for different

Postby fluidity » Sat Jan 09, 2021 7:36 am

Polyurethane glues come with different cure rates. All will expand to fill small caps and cure from moisture in the air. (or wood)

merl
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Re: glue for different

Postby merl » Sat Jan 09, 2021 9:56 am

fluidity wrote:
Sat Jan 09, 2021 7:36 am
Polyurethane glues come with different cure rates. All will expand to fill small caps and cure from moisture in the air. (or wood)
The instructions for pu glue often mention the benefit added moisture. I think someone mentioned that it does not work under vacuum, which would make sense, unless sufficient moisture would do the trick. Anyone know the full story?

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Re: glue for different

Postby Breze » Sat Jan 09, 2021 12:26 pm

Little bit of mist with a water spray bottle is ok. Derriccio have a look at https://www.kleiberit-direct.com/1k-pur ... fe-5010000

and this https://oaseforum.de/showthread.php?t=175400
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Trent hink
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Re: glue for different

Postby Trent hink » Sat Jan 09, 2021 2:21 pm

merl wrote:
Sat Jan 09, 2021 9:56 am
The instructions for pu glue often mention the benefit added moisture. I think someone mentioned that it does not work under vacuum, which would make sense, unless sufficient moisture would do the trick. Anyone know the full story?
Gorilla Glue works fine in a vacuum. It cures by reaction with moisture, and usually just the moisture in the air is plenty to make it harden. Dampening the surfaces will speed things up. I usually use a damp paper towel.

dericcio2
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Re: glue for different

Postby dericcio2 » Sun Jan 10, 2021 12:30 am

thanks! interesting thread
both are available on ebay but the gorilla one cost double then this one. btw they looks almost the same type of glue: red pu one component. you propose is easy to buy in ebayand not so expensive
Breze wrote:
Sat Jan 09, 2021 12:26 pm
Little bit of mist with a water spray bottle is ok. Derriccio have a look at https://www.kleiberit-direct.com/1k-pur ... fe-5010000

and this https://oaseforum.de/showthread.php?t=175400


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