|Sakrete Concrete Mortar Dissolver cleaned the lettering|
If the dissolver is able to work, a white crust will form as the concrete or mortar dissolves.
Brush or scrape off material loosened by the dissolver before adding more dissolver.
Use tools like a brass brush and wooden or plastic scraper.
The dissolver evaporates slowly, so spot applications are effective if you let them work.
It does not eat steel, brass, or bronze, and does not appear to cause rust while it's working.
Be patient, this may take days on some tools.
|Sakrete Concrete Mortar Dissolver|
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Sugar also acts as a concrete retarder, and was used on an accidental spill in London Underground’s Victoria Line, enabling the mess to be shoveled up before it set.
Article in the UK Telegraph on how sugar acts as a concrete retarder.
|Kramer Brothers brass groover, cleaned with Sakrete Dissolver|