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Model Forum / General / Models / December 2006Question for 'Black Country Folk'?
How do you remove the black from black iron without resorting to shot blasting or an angle grinder? Is there a 'pickle' I can use? I an only dealing with small pieces >How do you remove the black from black iron without resorting to shot >blasting or an angle grinder? Is there a 'pickle' I can use? I an only >dealing with small pieces Do you mean the mill scale on 'black' bar? Dilute hydrochloric acid will do that, among other things. Probably salt solution in vinegar if you've got enough time. Or maybe the black varnish on some 'black iron' pipe? Cheers Tim Dutton Dry-Dock Traditional & Modern canal craft repairs Vintage diesel engine service >Do you mean the mill scale on 'black' bar? >Dilute hydrochloric acid will do that, among other things. Probably >salt solution in vinegar if you've got enough time. Coke works pretty well too. Regards, Tony Which type do you mean Pepsi or Coca Cola ;-)? I am trying to remove the mill scale and I have heard about Coke being used to clean engines but not about cleaning steel. I can remember the factory tea, if it was spilt on to the floor, it would leave a clean patch. Every day you learn something new. >>Do you mean the mill scale on 'black' bar? >>Dilute hydrochloric acid will do that, among other things. Probably [quoted text clipped - 4 lines] > Regards, > Tony >Which type do you mean Pepsi or Coca Cola ;-)? I am trying to remove the >mill scale and I have heard about Coke being used to clean engines but not >about cleaning steel. It is dilute phosphoric acid plus several hundred spoonfulls of sugar and assorted other crap - the phosphoric seems to do a nice job of cleaning up steel. Found a pair of needlenose pliers on a beach a couple of years back that had a heavy layer of rust - an overnight soaking cleaned them up a treat. Regards, Tony >>Do you mean the mill scale on 'black' bar? >>Dilute hydrochloric acid will do that, among other things. Probably [quoted text clipped - 4 lines] >Regards, >Tony It's a bloody expensive way of buying phosphoric acid though... Mark Rand RTFM >>>Do you mean the mill scale on 'black' bar? >>>Dilute hydrochloric acid will do that, among other things. Probably [quoted text clipped - 6 lines] > >It's a bloody expensive way of buying phosphoric acid though... Don't recall being able to buy the unadulterated variety in Tesco's though ;-) Regards. Tony No problems this side of the channel. My local supermarket sells 30% hydrochloric acid for just over a euro a litre. Russell (from France) >No problems this side of the channel. My local supermarket sells 30% >hydrochloric acid for just over a euro a litre. Is that what they are calling Vin Ordinaire these days?? <G> Regards, Tony >>>>Do you mean the mill scale on 'black' bar? >>>>Dilute hydrochloric acid will do that, among other things. Probably [quoted text clipped - 12 lines] >Regards. >Tony <http://www.labpakchemicals.com/product.asp?ProdID=187&CatID=31> Minimum order £50, but there's lots of other fun things on the site :-) Mark Rand (Usual disclaimers) RTFM "Mark Rand" <randm@internettie.co.uk> wrote in message > > <http://www.labpakchemicals.com/product.asp?ProdID=187&CatID=31> > > Minimum order £50, but there's lots of other fun things on the site :-) > > Mark Rand (Usual disclaimers) > RTFM What a weird site! First it tells you that there will be a 10-14 day delay in supply so that they can work out what you plan to do with the chemicals, and somewhere else it promises next day delivery. But in case you can't think of any legit uses for the potassium nitrate, etc. there's a list of suggestions as to how you can use their chemicals... To think that back in the 1950s, I could get the bus to Flatters & Garnett opp Manchester University, and buy more or less anything my pocket money could pay for, even signing the poisons book occasionally. Take a U-tube, pour in water to a depth of about 2 cm. Now very gently add 0.88 ammonia down one of the limbs - ~1cm worth. Even more cautiously, add conc. sulphuric acid down the other. Now try pouring the concoction away - safety glasses, gloves etc. are recommended.  SignatureM Stewart Milton Keynes, UK -- Posted via a free Usenet account from http://www.teranews.com ><http://www.labpakchemicals.com/product.asp?ProdID=187&CatID=31> > >Minimum order £50, but there's lots of other fun things on the site :-) I guess an order for Pot. Nitrate and flowers of Sulphur might be a biot too obvious <G> Regards, Tony Mortar remover/brick cleaner from the builder's merchants is a cheap source of dilute hydrochloric (aka muriatic) acid. >>>>Do you mean the mill scale on 'black' bar? >>>>Dilute hydrochloric acid will do that, among other things. Probably [quoted text clipped - 12 lines] >Regards. >Tony John Ambler Sussex, UK Return E-mails to john@skiprat.net http://www.skiprat.net >It's a bloody expensive way of buying phosphoric acid though... not if you buy cheapo own-brand diet cola. 's quite good for cleaning the bog, too. SignatureAustin Shackles. www.ddol-las.net my opinions are just that "All animals are equal, but some animals are more equal than others" George Orwell (1903 - 1950) Animal Farm > >It's a bloody expensive way of buying phosphoric acid though... > > not if you buy cheapo own-brand diet cola. > > 's quite good for cleaning the bog, too. Would that be by direct or indirect application ?????? <GRIN> AWEM >> >It's a bloody expensive way of buying phosphoric acid though... >> [quoted text clipped - 3 lines] > >Would that be by direct or indirect application ?????? <GRIN> direct, I'd not actually drink the stuff. SignatureAustin Shackles. www.ddol-las.net my opinions are just that "Nessun maggior dolore che ricordarsi del tempo felice nella miseria" - Dante Alighieri (1265 - 1321) from Divina Commedia 'Inferno' Generally speaking, the cleaners which are suitable for removing limestone scale etc in toilets and bathrooms contain both phosphoric and hydrochloric acids. And this is precisely what is wanted in cheap supply. Again, firms like B&Q flog stuff for cleaning crap from limestone, cement, brick and whatever. If you really get desperate, bung the lot in brown sauce or tip your dud battery acid into a plastic container. They all work! You can also remove redundant mothers in law with caustic soda. Chopping them up into useable bits is the difficult part. The ideal Christmas present for desperate fathers in law? Norm >Generally speaking, the cleaners which are suitable for removing >limestone scale etc in toilets and bathrooms contain both phosphoric >and hydrochloric acids. And this is precisely what is wanted in cheap >supply. Again, firms like B&Q flog stuff for cleaning crap from >limestone, cement, brick and whatever. I know someone who buys cheap generic cola to clean the bog 'cos it's cheaper than toilet cleaner. SignatureAustin Shackles. www.ddol-las.net my opinions are just that "If you cannot mould yourself as you would wish, how can you expect other people to be entirely to your liking?" Thomas À Kempis (1380 - 1471) Imitation of Christ, I.xvi. Thanks for all the information. I'll now stick 'em down the loo (we don't use 'bog' down south) and have a Hot Curry. Should come out like silver. > How do you remove the black from black iron without resorting to shot > blasting or an angle grinder? Is there a 'pickle' I can use? I an only > dealing with small pieces |
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