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Old Ampreg 20 & Redux 420

 
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wdaniell.longport(at)gmai
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PostPosted: Sun Oct 06, 2019 4:00 am    Post subject: Old Ampreg 20 & Redux 420 Reply with quote

My advice is not dispose of it.   While it might not be airworthy it is an amazing adhesive.  I stuck a handle back on a collender with redux which had been open at least 5 years thinking that it would last a couple of weeks what with cycles of the dishwasher etc.   That was 5 years ago and it shows no sign of softening or loosening its grip.
As for epoxy i believe that all epoxies are basically similar.  Anyway i used local colombian epoxy designed for insulating transformers to fill my control surfaces.   The owner chemist of the company told me that if it cures itll be fine for that purpose.
William Daniell
LONGPORT
+57 310 295 0744
On Sun, Oct 6, 2019, 06:04 flyingphil2 <philipjtiller(at)gmail.com (philipjtiller(at)gmail.com)> wrote:

Quote:
--> Europa-List message posted by: "flyingphil2" <philipjtiller(at)gmail.com (philipjtiller(at)gmail.com)>

Hello everyone,

After a few years playing with another type of 'Euro' aircraft, I'm now helping someone with their Tri-Gear kit.
I'm doing an inventory and of course have got a load of out of date Ampreg 20 and Redux 420.  The Ampreg 20 expired in 2002 and the Redux 420 in 2003.

I'm sure this is all destined for the bin but 'Europa folklore' suggests that the Ampreg could be used for surface filling of the control surfaces.  Is this true?  Will it still go off and can it still be used for non structural purposes?  I note it's the '20' and so understand that for H&S reasons we may want to use 21 instead.

If all this is fit for disposal, where can I do that in the UK?  Will council recycling centres take it?

Thanks,

Phil




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Duncan McFadyean



Joined: 18 Jan 2011
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PostPosted: Sun Oct 06, 2019 4:51 am    Post subject: Old Ampreg 20 & Redux 420 Reply with quote

If there are crystals in the hardner (which can be too fine to see easily), these will tend to be the source of paint defects where located immediately under the paint film in any filler made with this old epoxy.
It might be possible to redissolve these crystals back in to the hardner prior to use, by means of gentle heating.

Duncan McF.

Quote:
On 06 October 2019 at 11:02 flyingphil2 <philipjtiller(at)gmail.com> wrote:




Hello everyone,

After a few years playing with another type of 'Euro' aircraft, I'm now helping someone with their Tri-Gear kit.
I'm doing an inventory and of course have got a load of out of date Ampreg 20 and Redux 420. The Ampreg 20 expired in 2002 and the Redux 420 in 2003.

I'm sure this is all destined for the bin but 'Europa folklore' suggests that the Ampreg could be used for surface filling of the control surfaces. Is this true? Will it still go off and can it still be used for non structural purposes? I note it's the '20' and so understand that for H&S reasons we may want to use 21 instead.

If all this is fit for disposal, where can I do that in the UK? Will council recycling centres take it?

Thanks,

Phil




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=491641#491641











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grahamsingleton(at)btinte
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PostPosted: Sun Oct 06, 2019 11:31 am    Post subject: Old Ampreg 20 & Redux 420 Reply with quote

Use the Ampreg for filling, but mix some colloidal silica with it. That way you can add 30% more filler and it will still spread.
Use the Redux to mend things in the house; or non structural stuff in the airplane.
Graham

Quote:
On 6 Oct 2019, at 11:02, flyingphil2 <philipjtiller(at)gmail.com> wrote:



Hello everyone,

After a few years playing with another type of 'Euro' aircraft, I'm now helping someone with their Tri-Gear kit.
I'm doing an inventory and of course have got a load of out of date Ampreg 20 and Redux 420. The Ampreg 20 expired in 2002 and the Redux 420 in 2003.

I'm sure this is all destined for the bin but 'Europa folklore' suggests that the Ampreg could be used for surface filling of the control surfaces. Is this true? Will it still go off and can it still be used for non structural purposes? I note it's the '20' and so understand that for H&S reasons we may want to use 21 instead.

If all this is fit for disposal, where can I do that in the UK? Will council recycling centres take it?

Thanks,

Phil




Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=491641#491641











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rowlandcarson(at)gmail.co
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PostPosted: Sun Oct 06, 2019 2:34 pm    Post subject: Old Ampreg 20 & Redux 420 Reply with quote

On 2019-10-06, at 11:02, flyingphil2 <philipjtiller(at)gmail.com> wrote:

Quote:
After a few years playing with another type of 'Euro' aircraft, I'm now helping someone with their Tri-Gear kit.
I'm doing an inventory and of course have got a load of out of date Ampreg 20 and Redux 420. The Ampreg 20 expired in 2002 and the Redux 420 in 2003.


Phil - if you don’t want it, I’ll take it all off your hands. Continue with messages direct to me <rowlandcarson(at)gmail.com> if you want to proceed. I’m in Gloucestershire.

in friendship

Rowland

| Rowland Carson ... that's Rowland with a 'w' ...
| <rowlandcarson(at)gmail.com> http://www.rowlandcarson.org.uk
| Skype, Twitter: rowland_carson Facebook: Rowland Carson


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kingsnjan(at)westnet.com.
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PostPosted: Mon Oct 07, 2019 3:09 am    Post subject: Old Ampreg 20 & Redux 420 Reply with quote

Hello Duncan, quite some time now since we had the pleasure of staying
with you . . .

I find your comment interesting as I think I could be a victim of your
findings.
Could you enlarge on how the defects become manifest please.

Best regards
Kingsley in Oz
On 06.10.19 10:49 pm, D McFadyean wrote:
Quote:


If there are crystals in the hardner (which can be too fine to see easily), these will tend to be the source of paint defects where located immediately under the paint film in any filler made with this old epoxy.
It might be possible to redissolve these crystals back in to the hardner prior to use, by means of gentle heating.

Duncan McF.


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budyerly@msn.com



Joined: 05 Oct 2019
Posts: 280
Location: Florida USA

PostPosted: Mon Oct 07, 2019 5:01 pm    Post subject: Re: Old Ampreg 20 & Redux 420 Reply with quote

I agree that old Redux is more than reasonable for general adhesion provided the hardener is not thickened beyond use.

I use old adhesive for wire tie pads (those sticky pads don't last, Redux does), tack on of metal to glass, etc.

Bud Yerly


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