Muratic acid (which is diluted hydrochloric acid) will damage iron and steel. In this case it also removed any protective coating that was on the
table and allowed rust to form and keep forming. Phosphoric acid can be use
to remove the rust if you don't want to use an abrasive method. Neutralize
with baking soda or a detergent. Rinse with water then coat with paste wax.
Roger
<fredfighter@xxxxxxxxxxx> wrote in message
news:1126687634.895857.221560@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx >
> John Martin wrote:
>> fredfighter@xxxxxxxxxxx wrote:
>> >
>> > You didn't specify if the saw table was aluminum or ferrous metal
>> > but ferrous metal should not be eaten away by hydrocloric acid
>> > so I assume aluminum.
>> >
>> ...
>>
>> How sure are you about that, Fred?
>>
>
> Pretty sure. Muriatic (hydrocloric) acid can be used to clean
> scale and mineral buildup in iron pipes. It should not eat
> holes in iron overnight.
>
> OP says the table top was cast iron. Perhaps the spots were
> discolored, but not pitted?
>
> --
>
> FF
>
Re: Cause and cure for eczema ..."Iron dermis levels might be implicated in atopic dermatitis patients" ... In vivo assessment of iron and ascorbic acid in psoriatic dermis.... Effects of metal ions on lipid peroxidation in cultured rat ... (misc.health.alternative)
Re: Methylene chloride as a metal cleaner? ... Yepp, they were cast iron, but had been plated under the crud. ... The acid is common available in a one gallon jug in 32% for cleaning masonry and pools. ... And you must scrub it, dry it and coat it rather quickly, or it will develop a fine layer of rust within hours. ... It will also clean copper and brass, but you would have to remove the copper from the iron piece, as soaking it long enough to strip the rust will leave the copper a nasty reddish color that's very hard to remove. ... (rec.antiques)
Re: More on Electrolytic Rust Removal ... My interest is is in rust removal from wrought iron, ie iron that been made by the reduction process the way metallic iron was made from iron ore before the bessemer process was invented in 1866/7. ... I collect old iron implements made from wrought iron and to remove the rust, i first heat to a dull red heat to crack off the heavy scale, then i use a plastic bucket or suitably sized container to hold the iron object, then i fill the container to cover the iron with old battery acid.... i aquired a 90lb silversmiths T stake made about 1800 from wrought iron with crucible steel fire welded to the top face and its nice enough as an ornament in my sitting room, even tho its a really useful part of my silversmiths workshop. ... (rec.crafts.metalworking)
Re: Methylene chloride as a metal cleaner? ... Yepp, they were cast iron, but had been plated under the crud. ... Only the inside sheet metal was copper.... We use a solution of muriatic acid.... pretty much all the rust.... (rec.antiques)
Re: Follow-up: Cold blue.... ... but the Muriatic is for pools and metal. ...Hydrochloric acid is for chemistry and medicine and pure stuff. ... There are trace elements in Muriatic if pure it would be Hydrochloric. ... (rec.crafts.metalworking)
