Left a large glass bowl sitting on a teak garden table last summer,
which unfortunately has left a dark 6" diameter stain on the table
surface, presumably as rainwater with the usual air pollutants has
run off the bowl and settled on the wood before eventually evaporating
away.

Any ideas on how to tackle the stain? Have already tried
simple cleaning with garden furniture cleaner and then re-oiling, but
no joy. Have been reading about wood bleach and /or oxalic acid.
Anybody have experience of these?

TIA

"Bill" wrote in message
...
Left a large glass bowl sitting on a teak garden table last summer,
which unfortunately has left a dark 6" diameter stain on the table
surface, presumably as rainwater with the usual air pollutants has
run off the bowl and settled on the wood before eventually evaporating
away.

May not be a dark stain. It could be the rest of the table which has
bleached in the sun's UV.

luggsie

"Bill" wrote in message
...
Left a large glass bowl sitting on a teak garden table last summer,
which unfortunately has left a dark 6" diameter stain on the table
surface, presumably as rainwater with the usual air pollutants has
run off the bowl and settled on the wood before eventually evaporating
away.

Any ideas on how to tackle the stain? Have already tried
simple cleaning with garden furniture cleaner and then re-oiling, but
no joy. Have been reading about wood bleach and /or oxalic acid.
Anybody have experience of these?

TIA
Have used oxalic acid before on pine which had darkened due to it being
denatured when the paint was left to flake for some years. It worked to a
good extent on pine, not a total panacea but definitely lightened the
darkened area. The oxalic acid was manufactued by 'Liberon', sold as wood
bleach. The problem I foresee with your situation is that you are trying to
remove a ring stain, and that may require careful application of the acid to
avoid ending up with a bleached area. Dunno, I'm probably exaggerating the
effects of oxalic acid, it's not that strong, and I've no experience of its
effect on teak.

Andy.