Tabby wrote:

On May 15, 6:06 pm, geoff wrote:
Is there any realistic way of "rejuvinating" the enamel of a toilet?

The glaze is glass, which doesnt discolour. Either there's something
on the surface, or its so badly scratched its looking lighter due to
light scattering. Surface muck is effectively removed with 97%
sulphuric acid - but do treat it with real respect.


NT


97%? Bit extreme!

A trick my old man did was to take a balloon, fit to a bit of hose,insert
baloon round u-bend and inflate - then pinch off the hose.

Now fill the bowl to the rim with water make up to dilute strength (5%)
with an acid of your choice (he used some left over CH descaler). Leave
overnight, deflate baloon, rinse. Water is in constant contact so conc acid
not necessary. I'd use HCl personally - chloride salts are generally more
soluable than sulphates so more chance of the dissolved stuff staying
dissolved.

--
Tim Watts