The Holy Grail Cart Filler! Maybe.

[Quitter]

But were those screens made to be wet all the time? I'm using a filter from a french press, so I know that it was made to be used with hot liquids for human consumption. The cart area doesn't get "burnt" just very hot and very very wet.

Good point! Maybe i should try a quick experiment and soak a little piece of screen in a small puddle of juice and see what happens

[imogene]

Good point! Maybe i should try a quick experiment and soak a little piece of screen in a small puddle of juice and see what happens

Haw-haw. Very funny. Do you really not know what happens to brass when you get it wet for a long time?

Here's a photo:

http://i.ehow.com/images/GlobalPhoto...-main_Full.jpg

That's decomposing brass caused by oxidation. And it tastes bad.

[imogene]

Here's some more informtion about the corrosion of brass with water, mind you, they are talking about a water fountain, which isn't meant to be eaten or smoked

Brass under water without oxidization

Both copper and brass can react with water. Brass is much more interesting because it is a mixture of copper and zinc. Under certain circumstances the zinc can be dissolved out of the brass to leave a dull copper coloured representation of the original brass part. This corrsion process is called "dezincification" and has been known for at least 40 years. The mechanism by which it goes depends on the composition of the brass and the water, but not all brasses go in all waters. If you want corrosion resistant brass, I would ask your local plumbing supply shop what tehy recommend. Similarly, copper will oxidise in water to form a layer of copper oxide/hydroxide. To prevent discolouration of both brass and copper, why not coat the parts in a good clear lacquer or varnish?



Trevor Crichton
R&D practical scientist - UK

Here's a lot more information from the DOE's "Ask a Scientist"

http://www.newton.dep.anl.gov/askasc.../chem00828.htm

First, commercial "copper" or "brass" is usually an alloy.
There are dozens of types, depending upon the intended application. So the
"type" of brass you have may be a factor. Second, under "normal" conditions
copper / brass corrodes to form a complex blue-green impervious surface
layer that prevents further corrosion. This is called "patina" and you will
see it on "copper" roofs and "bronze" statues. It is considered a desirable
esthetic property, as well as protective feature of the object. Third,
corrosion requires five elements: a corrosive metal, oxygen, water, a
catalyst (in your case the chloride in the salt water), a porous oxidation
surface layer.

It's possible that pipe screens won't corrode with water, but I don't know if they will.

[rhoneil]

Good point! Maybe i should try a quick experiment and soak a little piece of screen in a small puddle of juice and see what happens

Id like to know.

[rhoneil]

Wow, you guys are making me want to go back to PTB. At least that was made to be wet and really hot in preparation of a product to be consumed by humans. I have tried the brass mesh for pipes. It was the second cheapest thing I have purchased to stick in my cart next to the PTB. The vapor, taste and throat hit seems to be the same as the FRF PTB mod Im using with a little easier draw. I am concerned with what comes out of the metal. My other concern is the fact that it has the potential of ruining my atty. I have one atty that has all the material crushed and broken off the solid metal bridge that holds it up. All things being equal... who knows?

rho

[imogene]

Wow, you guys are making me want to go back to PTB. At least that was made to be wet and really hot in preparation of a product to be consumed by humans. I have tried the brass mesh for pipes. It was the second cheapest thing I have purchased to stick in my cart next to the PTB. The vapor, taste and throat hit seems to be the same as the FRF PTB mod Im using with a little easier draw. I am concerned with what comes out of the metal. My other concern is the fact that it has the potential of ruining my atty. I have one atty that has all the material crushed and broken off the solid metal bridge that holds it up. All things being equal... who knows?

rho

Bad news there. PTB is made from PET plastic. This year, scientists discovered that PET water bottles leaches estrogen mimicking hormones and heavy metals (such as antimony) at room temperature and they are predicting that eventually PET will be banned for use with food. That's the third plastic in three years that they've found to be unsafe to be used with food. That's when I decided to try and go without plastic as much as I can.

We live in a hazardous world.

You have to make your own decisions here. I like using the metal mesh I'm using now and I'm seeking a stainless steel option, if I can find one, if the one I'm using now turns out to be aluminum. I'm willing to take my chances with it until I find a verifiable stainless steel mesh made for food.

They do make stainless steel pipe screens, btw.

Are you saying that it broke your atty? I was very careful when I cut my three screens to make sure that the center one didn't touch the atty bridge when inserted and that it was wide enough to hold the other to layers away from the center, which took a lot of fiddling, rolling, measuring, unrolling, cutting, and re-rolling and some seriously scratched up fingers. I use the small "cart bridge" across the top as my primary "wick" for the atty bridge itself.

[rhoneil]

Bad news there. PTB is made from PET plastic. This year, scientists discovered that PET water bottles leaches estrogen mimicking hormones and heavy metals (such as antimony) at room temperature and they are predicting that eventually PET will be banned for use with food.

We live in a hazardous world.

You have to make your own decisions here. I like using the metal mesh I'm using now and I'm seeking a stainless steel option, if I can find one, if the one I'm using now turns out to be aluminum. I'm willing to take my chances with it until I find a verifiable stainless steel mesh made for food.

They do make stainless steel pipe screens, btw.

Are you saying that it broke your atty? I was very careful when I cut my three screens to make sure that the center one didn't touch the atty bridge when inserted and that it was wide enough to hold the other to layers away from the center, which took a lot of fiddling, rolling, measuring, unrolling, cutting, and re-rolling and some seriously scratched up fingers. I use the small "cart bridge" across the top as my primary "wick" for the atty bridge itself.

Bad news indeed for the plastic companies that have all that water in plastic bottles. The good news is, now I have an explanation for my developing man boobs. Jokes aside, It would be nice to have something that would work and is safe. Maybe we could just use the same material that the atty bridge is made of.

rho

[rhoneil]

They do make stainless steel pipe screens, btw.

Are those the silver ones. If so Im off again to the Smoke Shack. I took all my brass ones out and discarding them. To be honest right now Id rather have bigger boobs than green lungs. Neither if I can help it.

rho

[imogene]

I was actually just concerned about the flavor of brass when it corrodes and the possibilty that it was weaken as it decomposed and I'd be sucking down brass bits into my lungs. I had no idea it was poisonous!

verdigris
\ver"di*gris\ (?), n. [f. vert-de-gris, apparently from verd, vert, green + de of + gris gray, but really a corruption of ll. viride aeris (equivalent to l. aerugo), from l. viridis green + aes, aeris, brass. see verdant, and 2d ore.]
1. (chem.) a green poisonous substance used as a pigment and drug, obtained by the action of acetic acid on copper, and consisting essentially of a complex mixture of several basic copper acetates.

verdigris

Green-blue coating of copper ethanoate that forms naturally on copper, bronze, and brass. It is an irritating, poisonous compound made by treating copper with ethanoic acid, and was formerly used in wood preservatives, antifouling compositions, and green paints.

[Suwat]

I use the wire mesh inside the atty with good result. Still needs some adjustment thou. It seems a bit on the dry side. I took apart one atty, carefully unrolled the wire mesh, cleaned the pieces up, and rolled them back like a roll of paper. The height seemed to be just perfect. You can squeeze the thing to fit the shape to the ct. As of now (24 hrs) there's no leakage but a little harder to refill. Anyway, thanks for the idea.