The wire mesh keeps the cotton part in shape, so I can give it a quick blast, as soon as it's oiled up it's as good as new
blimey, still wouldnt do it myself, the metal may hold it but if it shrinks you will have larger holes in the cotton round the metal bits than what its supposed to have without even knowing it
iv always cleaned mine on evenings and left to dry over night

luckily they dont need doing oftern