<http://schema.org/description>
"To cast particularly delicate,\ncarved and complicated models\nthe silicon must not only flow\nfreely but must vent itself. Silicon\nVent binds the small air bubbles\nin the mould-casting paste and\nsubsequently they rise to the\nsurface &amp;amp;ndash; improving flow."^^<http://www.w3.org/2001/XMLSchema#string>
<http://hobby.uk.com/silicone-mould-release-spray.html>