| stephenh |
| (regular) |
| 22/04/2008 17:16 |
Re: How do I treat this?
|
Alistair - the black marks are fungi - probably a 'blue stain-in-service' fungus . The fungus itself often blows the varnish, use oxalic acid to bleach it and sterilize the spores. And then revarnish.