[tccrockets] Re: Bonding Aluminum to Fiberglass
- From: James Dougherty <jafrado@xxxxxxxxx>
- To: tccrockets@xxxxxxxxxxxxx
- Date: Thu, 29 Nov 2012 20:36:47 -0800
Actually, Richard, disregard, Cotronics is not what you need for this - I
see what you are doing.
http://www.jamestowndistributors.com/userportal/show_product.do?pid=12214
It's an acid wash which chemically alters the surface as you've described.
Very cool! Can you send us a full report?
On Thu, Nov 29, 2012 at 8:30 PM, James Dougherty <jafrado@xxxxxxxxx> wrote:
> That's exactly what it is, like an etching primer you use for metal.
>
> Get some Cotronics 4540 Machinable aluminum or 4525. I have some
> I can give you one at the next launch if you need like pre-kitted 2 oz
> batches ;-)
>
>
> On Thu, Nov 29, 2012 at 6:09 PM, R Dierking <applerocketry@xxxxxxxxxxx>wrote:
>
>> I'm thinking it's acid based to chemically etch the material and also a
>> film so the aluminum will not oxidize immediately when exposed again to the
>> air. Some people use wet sanding of the aluminum to prevent the oxidation
>> layer that prevents good bonding. For this technique, slow cure epoxy (30
>> minute) is used and the aluminum surface is wet sanded with the epoxy. I
>> know, it sounds like a big mess, but it works!
>>
>> For my application, I'm looking to bond 1/8" thick aluminum between
>> sheets of 1/32" thick G-10 Garolite for fins. The attached photo shows the
>> aluminum test peice.
>>
>> Anyway, I'm probably going to try the West Systems Aluminum Etch on some
>> test pieces and see if I can pull the layers apart.
>>
>> Richard Dierking
>> ------------------------------
>> Subject: [tccrockets] Re: Bonding Aluminum to Fiberglass
>> From: bandman444@xxxxxxxxx
>> Date: Thu, 29 Nov 2012 17:31:47 -0800
>> To: tccrockets@xxxxxxxxxxxxx
>>
>>
>> I don't, when we bonded the aluminum fins to our N5800 rocket we used
>> LOCtite Hysol 9430 and used a sanding while epoxy on approach. It held to
>> Mach 3 so I guess it was ok.
>>
>> The West Systems kit looks interesting.
>>
>> Bryce Chanes
>>
>> Sent from my iPhone
>>
>> On Nov 29, 2012, at 4:51 PM, R Dierking <applerocketry@xxxxxxxxxxx>
>> wrote:
>>
>> Does anyone have experience using the West Systems 860-8 aluminum etch
>> kit for bonding aluminum to fiberglass?
>>
>> Richard Dierking
>>
>>
>
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