In message om, Dave
Liquorice writes
On Sat, 26 Mar 2005 12:57:34 +0000,
wrote:

you can sort old plaster out with Tartaric acid,

Filed away for future reference... Mind you I think everyone ought to
learn to plaster with old stuff, in small quantities. The fact it sets
so fast forces you into the proper "whack it on and leave it"

Had that happen to me several times - with "new" bags of plaster

The problem is that, while nobody else notices, it leaps out at me every
time I go past

--
geoff