Molasses to remove rust ?
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Fleet Mechanic
Joined: Apr 2008
Posts: 1,522
Likes: 21
From: HUDSON, FL
Molasses to remove rust ?
I know that this was brought up before but i forgot what you
call it.some of the guys said that they used some kind of molasses
to remove rust (i thnk that it was the guys that live on a farm)
what kind of molasses was it & where can i get it?
call it.some of the guys said that they used some kind of molasses
to remove rust (i thnk that it was the guys that live on a farm)
what kind of molasses was it & where can i get it?
Lead Driver
Joined: Nov 2002
Posts: 9,669
Likes: 1,249
From: Jefferson City, MO
Here is an old thread on it:
https://www.ford-trucks.com/forums/5...t-removal.html
It says "Sulphated molasses" whatever that is.
There are youtube videos on it. This one says sulfured molasses as well.
Molasses rust removal - YouTube
"You can remove rust from metal by soaking it in a mixture of feed grade molasses and water. Ive removed rust from washers, bolts, brake rotors, auto body parts, and more. Be sure to paint or treat the surface after rinsing to avoid flash rusting.
It is important that you use a sulfured molasses, which most often can be sourced from an agricultural feed store. I typically use a 3 parts molasses to 1 part water ratio for rust removal. (Hot water works best to dissolve the molasses) Submerge your rusty parts in the solution and check back in 2-3 weeks. Severely rusty parts will require additional time. The solution can be reused, but Ive noticed that it smells like it is fermenting after 2-3 months."
There are quite a few videos of it on youtube. I have never tried it myself. I have done the Apple Cider Vinegar method.
https://www.ford-trucks.com/forums/5...t-removal.html
It says "Sulphated molasses" whatever that is.
There are youtube videos on it. This one says sulfured molasses as well.
Molasses rust removal - YouTube
"You can remove rust from metal by soaking it in a mixture of feed grade molasses and water. Ive removed rust from washers, bolts, brake rotors, auto body parts, and more. Be sure to paint or treat the surface after rinsing to avoid flash rusting.
It is important that you use a sulfured molasses, which most often can be sourced from an agricultural feed store. I typically use a 3 parts molasses to 1 part water ratio for rust removal. (Hot water works best to dissolve the molasses) Submerge your rusty parts in the solution and check back in 2-3 weeks. Severely rusty parts will require additional time. The solution can be reused, but Ive noticed that it smells like it is fermenting after 2-3 months."
There are quite a few videos of it on youtube. I have never tried it myself. I have done the Apple Cider Vinegar method.
Fleet Owner
Joined: Jul 2004
Posts: 27,288
Likes: 1,053
From: NM
Somewhere I have pictures of a flathead block completely ruined by molasses. It ate out pits in every surface, to the point it could not be salvaged. No one has mentioned it apparently smells about like a sewage plant, too. There are a lot of better ways to remove rust IMO.
Logistics Pro
Joined: Jun 2011
Posts: 4,994
Likes: 421
From: u-rah-rah Wisconsin
I've used Brer Rabbit Full Flavor molasses to remove rust from some fine thread bolts. Just covered them with the goo - didn't dilute it - and after about a week, they were actually quite clean.
Molasses naturally contains sulfur, I believe. A special process is required to produce sulfur-free versions that tend to be sold at natural food stores.
Open to corrections on this.
DW
Molasses naturally contains sulfur, I believe. A special process is required to produce sulfur-free versions that tend to be sold at natural food stores.
Open to corrections on this.
DW
Welder User
Joined: Feb 2009
Posts: 5,269
Likes: 50
From: northwest MT
I use white vinegar and water mix 2:1.....work much faster (couple days to a week) and smells much better. Works great!
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Posting Guru
Joined: Sep 2004
Posts: 1,616
Likes: 3
From: Sapulpa OK
I too use white vinegar and have compared side by side molasses and vinegar. The vinegar won hands down. A five gallon can of molasses cost me $20 bucks at a local animal feed store. And it was very difficult to use. A gallon of vinegar cost me only $2 bucks at Smart & final store.
I now have a five gallon pail of stinky molasses I have to get rid of. Any suggestions?
I now have a five gallon pail of stinky molasses I have to get rid of. Any suggestions?
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I'll have the Roast Duck
Joined: Jul 2002
Posts: 9,622
Likes: 109
From: Northshore, MN
I would guess to say, molasses was used back in the day as an old trick to remove rust. Nowadays, there are more efficient means of doing it. I also use the vinegar and water method.
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