Marking blue

After using marking blue on copper plate / boiler barrel. Is there any product that removes the blue ?

Try acetone

Emgee

Acetone or IPA.

Dave

Cheers guy's did not have acetone, but her indoors nail varnish remover worked a treat.

I use methylated spirits, cheap and also useful around the workshop as a cleaner/ degreaser prior to, eg, loctiting or painting small parts.

Where do you get the cheap methylated spirits from? The cheapest I found was 5L @ £23.45 delivered compared to 5L acetone @ £18.35 (and with no impurities). IPA at prices similar to acetone.
Of course one can make one’s own ethanol cheaply enough but gov frowns on purifying it....

pgk

I buy my meths locally at Toolstation / Screwfix £3 for 500ml so, pro rata, similar to your prices, but a bottle lasts memaybe 12 months or more for little outlay.

Edited By Clive Brown 1 on 29/11/2021 16:13:14

Indian pale ale?

Google could be your friend.🙂

I guess it depends on where you live, but try farmers/agricultural suppliers, often not listed on websites but available over the counter.
I think I paid ten or eleven quid last time for 5 l.
Or maybe somewhere like APC if you live close enough.
https://apcpure.com/product/mineralised-methylated-spirits

Bill

If anyone needs IsoPropyl Alcohol, I can recommend Hexeal … excellent quality, price, and delivery.

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**LINK**

https://www.ebay.co.uk/itm/403165479949

MichaelG.