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A (4,5) iron torus knot 12" in diameter, 4" thick, with a hollow core, it weighs approximately 23 pounds


This sculpture required the preparation of a core of mold material (sand and resin), carved into the (4,5) torus knot. That core was covered by a layer of plastiline clay to make a 1/4" layer on top of the core. The result was placed in a two-part sand and resin mold. After that set, the two parts were separated, and the clay covered core had to be dug out and the clay removed (a rather tricky process). Then the sand core alone was placed inside the two-part mold, held away from it by six pieces of scrap iron used as spacers. Access holes and air vents were drilled in the outer mold, and it was all glued together, banded with two steel bands, and cups for pouring in were added to the outside. This was all done in four days.


Rights belong to Alex Feingold