In message , The Natural Philosopher
writes
geoff wrote:
In message
,
Tabby writes
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.

No, it's the ceramic under the glaze, which is why I was wondering,
on the off chance, that there was some technique I was unaware of

caustic soda

I've got 20 kilos of that sitting around absorbing moisture - I'll give
it a shot

--
geoff