It is a bit too big to put hot into acid bath...but, the staining from burnt pitch does come off if left in long enough in safety pickle though...prefer to clean with pumice powder and stiff bristle brush and a rinse down prior to placing in pickle...(cif/jif type cream cleaner and a toothbrush usually does it on smaller or lighter weight pieces). Still curious what the cookson's setters cement is though...
Cookson's Setters Cement is composed of Gum resin, Spar (which is crystallised minerals, similar to gypsum), Vaseline oil, paraffin wax and colour.
waiting to learn, with interest
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