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epoxy spray

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epoxy spray

Unread postAuthor: pat123 » Mon Jun 16, 2008 11:10 am

i made a stock out of styrofoam that i was going to use as a mold for aluminum. instead i was thinking of just coating it in something to make it hard. has anyone tried epoxy spray?
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Unread postAuthor: MaxuS the 2nd » Mon Jun 16, 2008 1:57 pm

What happens to the nozzle of the sprayer after you stop spraying?
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Unread postAuthor: brogdenlaxmiddie » Mon Jun 16, 2008 2:00 pm

If its what I'm thinking about, you just turn it upsides down and spray it for like 30 seconds and it's supposed to clean out the tip.
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Unread postAuthor: MaxuS the 2nd » Mon Jun 16, 2008 2:04 pm

Not if it's gone solid with epoxy, that won't happen.

How would you do it?
Epoxy is a thick, viscous liquid anyway, so it would be very difficult to make it into a fine mist.
Even if you managed to do that, then it would have to be mixed at the point where it exits the nozzle of the spray can, possibly with two nozzles pointed into the same point.
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Unread postAuthor: brogdenlaxmiddie » Mon Jun 16, 2008 2:06 pm

Hmm, I see what your saying. I asked my dad and he said that I'm thinking of "great stuff" and its not an epoxy. Sorry :oops:
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Unread postAuthor: blind909 » Mon Jun 16, 2008 2:31 pm

Are you talking about this stuff?
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Unread postAuthor: trollhameran » Mon Jun 16, 2008 2:47 pm

Just get some paint and mix it with pva or something, that usually makes a hard finish
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Unread postAuthor: pat123 » Mon Jun 16, 2008 3:18 pm

yeah blind that is the stuff i am talking about. I have tried coating it with other stuff but most of those just disolve it.
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Unread postAuthor: trollhameran » Mon Jun 16, 2008 3:56 pm

i would think acrylic paint with glue in would be ok to use
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Unread postAuthor: psycix » Mon Jun 16, 2008 3:58 pm

Maybe just use any air compressor spray thing to spray up epoxy, but apply it separated, dont spray both of the epoxy components out of the same nozzle at the same time. You could OR use two nozzles and spray em at the same time (best) or just re-use the first nozzle after clearing it with a few secs of spraying water.
This might ruin your sprayer, Im not sure, but its just an idea.
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Unread postAuthor: nivekatoz » Mon Jun 16, 2008 7:35 pm

You should get some fiberglass resin and fiber glass cloth and coat the foam stock with it.. Thats what they do when they make surf boards..or ultra lite air plains.
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Unread postAuthor: pat123 » Mon Jun 16, 2008 8:08 pm

i think fiberglass resin melts styrofoam
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Unread postAuthor: Fnord » Mon Jun 16, 2008 8:20 pm

Epoxy won't stand up to molten aluminum. Just use some plaster.

(Well... it might, but it will probably bubble and catch on fire and stink like hell.)
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Unread postAuthor: pat123 » Tue Jun 17, 2008 8:51 am

I need something that i can spread over in a thin coating and still be strong.
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Unread postAuthor: jackssmirkingrevenge » Tue Jun 17, 2008 9:11 am

You'll want a coating that's at least a few milimetres thick to have any measure of strength, and not epoxy on its own - glass cloth or carbon fibre matting would be ideal.

I think fiberglass resin melts styrofoam


When I need to make a lightweight middle section for an epoxy piston, I use a foam core, and it certainly doesn't melt.
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