played football with some candles!
I've just about done it, sand paper as John Bolton suggested couldn't find a volcano without getting pushed in, vacuumed then sanded then I vacuumed again, applied MS brushed in, extracted applied Chemspecs browning treatment left for a scientifically timed 'bit' and then extracted.
May try again tomorrow I'll see if I can see it from my hiding place.......under the table...doh!