[tccrockets] Re: Bonding Aluminum to Fiberglass
- From: R Dierking <applerocketry@xxxxxxxxxxx>
- To: "tccrockets@xxxxxxxxxxxxx" <tccrockets@xxxxxxxxxxxxx>
- Date: Thu, 29 Nov 2012 22:38:06 -0800
If I worked at at place like Dragonplate, I would need a really big lunch box -
you know, for those scrap pieces ;-)
Oh well, I'm using a sheet of 1/8" thick aluminum I bought at a scrap yard at
$5.25 per pound, and left over G-10. Not that I'm cheap (insert joke here);
just want to see if I can build something with this stuff. I'm not even sure
if it will save weight.
I will get the itching kit to see how it works.
I would be interested in the vacuum set-up. Would you please post some photos?
Richard
Sent from my iPad
On Nov 29, 2012, at 9:50 PM, "James Dougherty" <jafrado@xxxxxxxxx> wrote:
> I think I would break down and buy the whole sheet :-)
> http://dragonplate.com/ecart/categories.asp?cID=65
>
>
> On Thu, Nov 29, 2012 at 8:49 PM, James Dougherty <jafrado@xxxxxxxxx> wrote:
> Sorry, 1/32" thick G-10 Garolite
>
> http://dragonplate.com/ecart/product.asp?pID=3925&cID=93
>
> Ouch, pricy, I know ...
>
> But If you could design the fins to fit those sheets... man oh man.
>
>
> On Thu, Nov 29, 2012 at 8:46 PM, James Dougherty <jafrado@xxxxxxxxx> wrote:
> Richard,
> What laminates are you using?
> I have a vacuum setup I am not using if you want to borrow it.
> -james
>
>
> On Thu, Nov 29, 2012 at 8:36 PM, James Dougherty <jafrado@xxxxxxxxx> wrote:
> 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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