OzVMX Forum
Clubroom => Tech Talk => Topic started by: Oldrodder on September 16, 2007, 08:19:15 pm
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Recently read this article on Molasses dipping and decided to share with everyone
due to size limits I had to list one page at a time
Please make sure you read all three pages.
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Thanks Oldrodder - the mollasses seems to work great! What was the magazine you found the article in. Seems like it might be a good one to get. Cheers Steve
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Thanks Oldrodder it sure looks like it does a good job with out much effort now I have to find a swimming pool to fit my rusty old XD ute in.
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Something that big should be better with BI CARB blasting or similar, or I did get a 1955 chev dipped many years ago, somewhere in melbourne.
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great article , but a bit low on info ? what are ratios ? size of containers, time per item. can any omne fill in the gaps with content for us on the best way to De rust using th molasses method ?
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great article , but a bit low on info ? what are ratios ? size of containers, time per item. can any omne fill in the gaps with content for us on the best way to De rust using th molasses method ?
Reading page 1 he said he used about 120 litres of water then added five litres of molasses and then left them a few weeks.
I am in the process of setting one up to soak a fuel tank in so will let you know a bit more as I go through the process.
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yes i have a 44 gallon drum im thinking of putting to better use. i assume its not reactive in the sence of in water it has no shelf life ? if i make up a molasis tank it would remain active for some time ? or does it bio degrade.
i would assume the ratio of mix would also affect the reaction time and activeness on the metal ? Would be good if you can get the testing process under way, just i dont like my chances of pouring the wrong mix down my street late on night :O) in some covert opperation, althouhg i could be convinced to throw it on my neighbours lawn , bastards.,
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Freaky you might be better off with a plastic tank it might slowly eat away at a metal tank maybe. what do you think?
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i have no idea thats why im posting > is it active ? so if you leave metal in the tank will it desolve ? or is it only active on the iron rust ? if its not active on steel the 44 would hold it like a solvent ?
i have no idea. where are all the experts when you need em ?
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I will ask the man at the produce supplies when I pick up the molasses.
This next quote came out of wikipedia
Molasses is a chelating agent. A rusty object placed for two weeks in a mixture of one part molasses to nine parts water will lose its rust due to the chelating action of the molasses
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yep so it chisels, but does it eat drums :O)
could always use those big plastic bag to line it i guess, you get them thick ones desiged to fit into drums .....mmmm
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Correct . molasses does have chelating properties and it chisels the iron oxide off the iron. it does not change the iron in any way shape or form. as long as the vessel has a decent amount of good steel/iron as its base it will be fine . if its rusted thru . your gonna have a huge sticky sweet mess to clean up.
I put half a litre in a tank a few nuts and bolts as a helping hand and top up with water and put the lid on then a shake every few days . after a week it gets a good flush with water and a swirl of oily premix to coat the fresh steel.
watch when u take the lid off as gases are created in the process and it will spew a bit of crap out ...or blow the lid off so dont leave it sealed for too long
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the old forum had some pretty good info on this too.
back then, i was talking to a work mate about this molasses stuff as he's into a healthy shed lifestyle and he went on to tell me about an older family member of his who restores old road bikes and swears by his molasses tank.
and if you ever gotta get rid of it Freaky, i understand cows quite like it.
just a thought.
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we got horses i here they like it, but ill just have to tell the misses it has not rusty bits in it.
the 44 is new, just have no use for it and it has one of thoselids with a ring so it would be perfect. I just got to fint something rusty :O)
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i wonder if it will shine up fork bottoms? magnesium or alloy. ::)
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It will work Tony but its hell slow and.. it will eat away at the aluminium and the brass if any is present , not just the oxidisation. Much better safer and faster ways to clean alloy.
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they make better use of molasses here , but the tanks are of steel and i know they are very old ,pre war even
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Hi,
I have heard that It does a good job of cleaning up the metal but
the cleaned metal then needs to be treated straight away otherwise it will start to oxidise
again very quickly, this make me think that a steel tank may corrode badly at the top
at the solution air interface ;D
No First hand knowledge of this yet as I too am only in the investigative stages
Cheers
Noel
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I had my solution in my tank around 2x weeks, but had to decant it to get the tank welded, rinsed only with water.
The shop welded it, must have water/pressure tested, but after a couple of days since, its either a scum layer over all inside, but whats the best way of getting the residue out?
I had to put the solution back in, as I wanted to clean it again after welding, but only another week, as I want to use the bike next weekend. I think it may not be long enough for the solution to work, whats the time length recommended?
My tip is to use warm to hot water to mix the molasses in, as its hell sticky consistency raw.
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Some great tips here. Be interesting to see how you guys go with it. Be sure to let us know.
The best use I've seen of Molasses is in Bundaberg in Queensland. They sell the by-product in lovely square bottles ;D ;D
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My update is that I either didnt leave it in long enough (3 weeks) or mixed it correct (as per mix 1 to 9).
I found the tank only mildly cleaned, took more effort to get the molasses residue out, just some hot water initially, then used some Phosphoric (the base in rust converter) at 30%, it did a better clean out, but feeling around with my finger I still could feel and see a rusty stain.
Once I get the tank dents out etc, I will give it the POR15 tank product a go, I know someone who swears by it.