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maddawg308
Anyone ever do this?  Seems like a good idea to quickly remove rust coating the inside of a fount, just not sure if it would have any adverse affects. 
Mike, maddawg308
Build a man a fire, and he'll be warm for the night. 
Set a man on fire, and he'll be warm for the rest of his life!

Looking for my B'day lantern, any model, 5-74.


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bridd
I’ve done it several times when there is visible rust. Fill it with Evaporust and BB’s (or screws or nuts or whatever I have handy) put it in the sun to warm (or a warm place) and shake intermittently. Dump the Evaporust (save it for reuse). Pull the BB’s etc with a magnet.  Rinse with water, blow dry with a compressor, rinse with denatured alcohol. Rinse with camp fuel (may or may not be an unneeded step, but makes me feel better). Rust is gone. Works for me but sometimes I over think things. 
bart

"If you wanna go fast you gotta have gas...”     —Wildbull
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Brianb
I've done it and it works great. Sometimes too great. Sometimes it removes "structural rust" and creates a hole in the fount
Brian
Sautee, GA
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Nightlight for Aliens
I used white vinegar and BB's (steel zinc coated, walmart, 2000 BB's for under $4.-used half the pack)
Left vinegar in for a week, didn't do much. Drained and did it with BB's for 35 mins of shaking.. like night and day. kept turning 1/2 inch turns while shaking holding the fount at an angle .. got  a pattern of shake, turn, shake, turn, shake.. then swirled in a circle.. and upside down. Making sure the BB's pounded the inside surface and rolled at the same time.. not just up and down.
If your fount is rusty on the outside bottom, you will have to get a pen light to go inside the fount and look straight in to see if it is pitted good on the inside. Chances are once you clean it you might have thin spots or as others said, pin holes.
Founts are available at oldcolemanparts.com. 
IF you use vinegar, rinse with hot water in the tub, then do a few flushes shaking with BB's with hot water + baking soda mix.. to neutralize the vinegar acid. You will see the cap and cap collar start to rust up.. flash rust within minutes. Vinegar is wicked to flash rust in front of your eyes. After a hot rinse, towel dry and use a hair dryer on it for about 15 minutes getting it hot.. spray WD-40 inside enough to almost fully coat the bottom, turn so you coat all inside with WD-40.
I'm in California, can't get denatured alcohol. I'm cheep, I'm not shopping for it on ebay.

My way might not be the best way... I have never done it another way to know.. like Evapo-Rust or Muriatic Acid. I won't use Muriatic Acid.. I have experienced using it before on a rock wall.

Evapo-Rust  isn't cheep.
ᗋしіЄทՏ ᗋГЄ ГЄᗋし!
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Andrew
Vinegar will damage brass in hours so don’t leave it for weeks in a brass fount.
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Eel
I used white vinegar and BB's (steel zinc coated, walmart, 2000 BB's for under $4.-used half the pack)
Left vinegar in for a week, didn't do much. Drained and did it with BB's for 35 mins of shaking.. like night and day. kept turning 1/2 inch turns while shaking holding the fount at an angle .. got  a pattern of shake, turn, shake, turn, shake.. then swirled in a circle.. and upside down. Making sure the BB's pounded the inside surface and rolled at the same time.. not just up and down.
If your fount is rusty on the outside bottom, you will have to get a pen light to go inside the fount and look straight in to see if it is pitted good on the inside. Chances are once you clean it you might have thin spots or as others said, pin holes.
Founts are available at oldcolemanparts.com. 
IF you use vinegar, rinse with hot water in the tub, then do a few flushes shaking with BB's with hot water + baking soda mix.. to neutralize the vinegar acid. You will see the cap and cap collar start to rust up.. flash rust within minutes. Vinegar is wicked to flash rust in front of your eyes. After a hot rinse, towel dry and use a hair dryer on it for about 15 minutes getting it hot.. spray WD-40 inside enough to almost fully coat the bottom, turn so you coat all inside with WD-40.
I'm in California, can't get denatured alcohol. I'm cheep, I'm not shopping for it on ebay.

My way might not be the best way... I have never done it another way to know.. like Evapo-Rust or Muriatic Acid. I won't use Muriatic Acid.. I have experienced using it before on a rock wall.

Evapo-Rust  isn't cheep.


So your first problem is the zinc coating on the BBs is neutralizing your vinegar as it eats the zinc.  Soak 'em to strip 'em before you install 'em. 
Alcohols?  You can have all the methanol you want at your Walmart.  Look for "HEET" in the yellow bottle, $1.50 per.  In Santa Barbara Cty I can buy S-L-X at Walmart, HD, Lowe's, Ace.  (Your local AQMD may differ.)  You can probably buy 99% IPA at Safeway/Vons, $2.50 a pint.
Please dunk test your fount after abusing its interior.  A flashlight doesn't cut it.
Evaporust is expensive compared to water.  What are great results worth?  What is your time worth?

EEL Eclectic Lanterns, div.  Doofenshmirtz-EEL Incorporated.

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Dmacp
evaporust, if left long enough seems to turn into a substance that looks like egg yolk. It coats everything and is hard to remove. I watch the solution and change it when it begins to thicken.
Liquid chemical will remove rust from pits. BB's roll right over it. They are ok for knocking loose rust and grime down but will not get the pits clean. Evaporust will. Takes a while though.
Dan
ICCC member #604
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Gunhippie
Brianb wrote:
I've done it and it works great. Sometimes too great. Sometimes it removes "structural rust" and creates a hole in the fount


It's far better to discover the obscured holes before lighting the GPA up! There is no such thing as "structural rust". Rust is rot. Always do a dunk or soapy water pressure test after cleaning a fount--rusty or not. It's your body, and if you think "chicks dig scars", I can assure they don't.

Even after a fount or tank has passed a dunk test, it's a very good idea to burn the first full tank outside in a fire-safe area. More than once, I've had a fount or tank that passed my tests with flying colors, only to have it start leaking after burning for a few hours.
It's priceless until someone puts a price on it.
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Timm--Middle of nowhere, near the end of the road, Oregon.
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