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21st January 2013, 07:00 PM
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#12 |
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Member
Join Date: Mar 2006
Location: Room 101, Glos. UK
Posts: 4,215
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casting sand for comparison: sand next to the metal gets burnt black, yours does appear to have some black specks. the bigger pebbles are atypical in casting material. may have dropped in for visit later & stayed.
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Threaded Mode