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Published on Jul 21, 2012
I am trying sodium silicate from a foundry supplier, artisanfoundry.co.uk instead of the stuff I originally used from a pottery supplier. The results are much better, this product is thicker and has a brown colour. The core is ready immediatly. 20ml of sodium silicate is added to 1Kg of dry sand. This will be the method I will use for all future cores. Watch in HD.