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04-18-2010, 02:30 PM
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#1
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Senior Member
Trailer: 1984 Fiber Stream
Posts: 183
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Does anyone have a good suggestion for rust stain removal? The stuff I used worked, but it seemed like the result was more from "elbow grease" than the actual working of the product.
I replaced the rusty door stop with a new one, and tried to get the rust stains off at the same time.
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04-18-2010, 02:39 PM
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#2
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Senior Member
Trailer: 1983 13 ft Scamp
Posts: 3,082
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04-18-2010, 10:48 PM
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#3
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Senior Member
Trailer: 1974 Boler 13 ft (Neonex/Winnipeg)
Posts: 3,008
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I like Davis' FSR (Fiberglass Stain Remover). It's a blue gel; you put it on and rinse it off. It works well in my experience and is safe for gelcoat.
http://www.amazon.com/FSR-Fiberglass-Stain...z/dp/B0000BYMNV
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04-19-2010, 04:35 AM
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#4
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Senior Member
Trailer: 1984 U-Haul / 02 Mazda pick up
Posts: 174
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Muriatic acid works just great. I use a cheap paint brush, dab it on and wait a while. More than one application is needed if the rust is thick, but no scrubbing is required.
Do not put it on stainless steel. It promotes rust on stainless.
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01-07-2013, 11:11 AM
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#5
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Moderator
Name: RogerDat
Trailer: 2010 Scamp 16
Michigan
Posts: 3,744
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You might try Bar Keepers Friend. Powdered cleanser, low abrasive, a type of bleach. Known safe for fiberglass campers but does require some elbow grease.
Had not heard of the FSR product. Where do you find that at Raya?
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01-07-2013, 11:58 AM
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#6
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Senior Member
Trailer: Trillium 2010
Posts: 5,185
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Quote:
Originally Posted by RogerDat
You might try Bar Keepers Friend. Powdered cleanser, low abrasive, a type of bleach. Known safe for fiberglass campers but does require some elbow grease.
Had not heard of the FSR product. Where do you find that at Raya?
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Old post. Raya has been AWOL for quite some time. Shame, I enjoy her contributions. Raz
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01-07-2013, 02:50 PM
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#7
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Moderator
Name: RogerDat
Trailer: 2010 Scamp 16
Michigan
Posts: 3,744
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Quote:
Originally Posted by P. Raz
Old post. Raya has been AWOL for quite some time. Shame, I enjoy her contributions. Raz
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I guess I'll just look up the product online. It's always good to find out about products people have used that are safe for FG. Been off-line for awhile and forgot to look at the posting date.
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01-07-2013, 04:17 PM
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#8
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Senior Member
Trailer: Trillium 4500
Posts: 2,050
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Someone had dropped a cheap metal tool into my pool and it left rust stains on the bottom. I couldn't get rid of the stains no matter what I tried. One day I was reading through some "Natural Remedy" info online and it said to take some vitamin C tablets and put them in an old sock to hold them together and use the sock as a scrub brush. After a few minutes rubbing on the stain the vitamin C began to melt and the stain disappeared. Outside of a pool you could probably melt a single tablet in a very small amount of water and rub it on the stain.
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01-07-2013, 04:50 PM
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#9
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Senior Member
Trailer: Trillium 2010
Posts: 5,185
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Naval Jelly= Phosphoric acid
muriatic acid= hydrochloric acid
Vitamin C= ascorbic acid
A common theme perhaps.
Vinegar = acetic acid might be another one?? Raz
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01-07-2013, 05:05 PM
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#10
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Senior Member
Name: Francesca Knowles
Trailer: '78 Trillium 4500
Jefferson County, Washington State, U.S.A.
Posts: 4,669
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Barkeeper's Friend= oxalic acid (plus some very mild abrasives)
Oxalic acid is the best rust stain remover I've found...
According to rust primer,
Quote:
Oxalic acid operates to remove rust by forming a water-soluble complex ion (called a chelate) around each iron ion
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On fiberglass, make a paste of B.F. and let it sit for awhile...then wash off. (It won't "eat away" the fiberglass itself).
Francesca
__________________
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01-07-2013, 05:08 PM
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#11
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Senior Member
Trailer: No Trailer Yet
Posts: 5,112
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Quote:
Originally Posted by Francesca Knowles
Barkeeper's Friend= oxalic acid (plus some very mild abrasives)
Oxalic acid is the best rust stain remover I've found.............
Francesca
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+1 I use it in my showers and tubs (rusty well water). It works great on rust stains.
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01-07-2013, 05:15 PM
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#12
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Senior Member
Name: Francesca Knowles
Trailer: '78 Trillium 4500
Jefferson County, Washington State, U.S.A.
Posts: 4,669
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I think oxalic acid would work on bloodstains, too- there's lots of iron in blood.
Francesca
P.S.
Not that I'm contemplating any actions that might result in a necessity to know/use this information....
F.
__________________
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01-07-2013, 05:19 PM
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#13
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Senior Member
Trailer: Trillium 2010
Posts: 5,185
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You used to be able to buy pure oxalic acid at the pharmacy. I've used it to remove water stains in old furniture. Raz
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01-07-2013, 06:35 PM
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#14
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Senior Member
Name: Ron
Trailer: 2008 13' Scamp
British Columbia
Posts: 325
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Quote:
Originally Posted by P. Raz
You used to be able to buy pure oxalic acid at the pharmacy. I've used it to remove water stains in old furniture. Raz
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You still can and it's probably the cheapest and best product to use but the others listed also work. Boaters use oxalic acid more because, especially around salt water, rust stain removal is more of an issue.
I posted the reference to FRS, the blue gel. It is the best non abrasive stain remover that I've ever used. I buy mine at a marine store.
Ron
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01-08-2013, 12:08 PM
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#15
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Senior Member
Trailer: 2000 Burro 17 ft / 2001 Toyota Tundra V8 2wd
Posts: 339
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I use CLR to clean the bathroom and it works well, the bottle says it's safe for fiberglass.
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01-08-2013, 12:47 PM
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#16
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Senior Member
Name: Francesca Knowles
Trailer: '78 Trillium 4500
Jefferson County, Washington State, U.S.A.
Posts: 4,669
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I like CLR too, but it seems to me that its effectiveness (especially against rust) has been reduced since they had to take the phosphorous out of the formula.
Of course, removal of phosphorous from cleaning supplies has long been a pet peeve of mine, so I could just be blowing smoke in this department!
Francesca
__________________
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01-08-2013, 01:51 PM
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#17
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Senior Member
Trailer: Boler (B1700RGH) 1979
Posts: 5,002
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Jelmar makes a line of CLR products, but I think it's reasonable to assume we're talking about the basic CLR liquid Calcium Lime & Rust Remover. The MSDS won't open on my tablet, but anyone who is curious could check to confirm that it is an acidic solution which does not currently contain phosphorus.
From the manufacturer's CLR FAQ:
Quote:
Can I clean my fiberglass boat, tub, or shower stall?
Yes, CLR is safe on fiberglass. Begin with a mixture of CLR and water and progress to full strength if needed.
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I use CLR at home, and would certainly consider it for rust stain removal from fiberglass; however, note that the same FAQ also includes:
Quote:
CLR will take the finish off of aluminum and copper.
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Our window frames are typically aluminum.
__________________
1979 Boler B1700RGH, pulled by 2004 Toyota Sienna LE 2WD
Information is good. Lack of information is not so good, but misinformation is much worse. Check facts, and apply common sense liberally.
STATUS: No longer active in forum.
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01-08-2013, 03:02 PM
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#18
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Senior Member
Trailer: 93 Burro 17 ft
Posts: 6,024
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Quote:
Originally Posted by Francesca Knowles
I like CLR too, but it seems to me that its effectiveness (especially against rust) has been reduced since they had to take the phosphorous out of the formula.
Of course, removal of phosphorous from cleaning supplies has long been a pet peeve of mine, so I could just be blowing smoke in this department!
Francesca
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You could always add the phosphorus back in. TSP (tri-sodium phosphate) powder can be purchased at Lowe's and probably other home improvement stores. We add a little to each load of dishes in the dishwasher, since they took the phosphorus out of the dishwashing powder too.
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01-08-2013, 03:09 PM
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#19
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Senior Member
Name: Francesca Knowles
Trailer: '78 Trillium 4500
Jefferson County, Washington State, U.S.A.
Posts: 4,669
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Quote:
Originally Posted by Mike Magee
You could always add the phosphorus back in. TSP (tri-sodium phosphate) powder can be purchased at Lowe's and probably other home improvement stores. We add a little to each load of dishes in the dishwasher, since they took the phosphorus out of the dishwashing powder too.
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Yeah- I do that, too...but it never occurred to me to add it to CLR.
Thanks for the idea!
Francesca
__________________
............... ..................
Propane Facts vs. Fiction:. Click here
Tow Limit Calculator: Click here
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01-08-2013, 04:26 PM
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#20
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Senior Member
Name: Steve
Trailer: 2018, 21ft escape— 2019 Ram 1500 Laramie
NW Wisconsin
Posts: 4,500
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Phosphorous free
Quote:
Originally Posted by Francesca Knowles
I like CLR too, but it seems to me that its effectiveness (especially against rust) has been reduced since they had to take the phosphorous out of the formula.
Of course, removal of phosphorous from cleaning supplies has long been a pet peeve of mine, so I could just be blowing smoke in this department!
Francesca
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The last box of TSP I bought in Wisconsin was phosphate free . The last bag of lawn fertilizer I bought in Minnesota was phosphorous free. Many states require phosphate free detergents .. I live on a lake where many of the homes have antiquated septic systems and the outlawing of phosphates has done wonders in preventing algae from turning the lake into Pea Soup during the summer . We also are not allowed to use granular lawn fertilizer in proximity of the lake (Nitrogen) and we must maintain a 35 ft buffer zone from the high water mark inland . Times and our knowledge of the environment change
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