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Here's an 80#, 3X12X18" base that's available from an industrial tool company for under $40. Because of its weight the shipping is also about $40. The spikes in the picture are Parts Express #240-715. See the Enco catalog at http://www.use-enco.com/CGI/INLMK3?PMK0NO=287965 Granite Equipment Base
Nice and heavy but I think my preference for weight and dough would be with The Sandblaster... See details under turntables here. Back a ways.