A kinetic sculpture composed of gold anodized aluminum, *Bicho parafuso sem fim* belongs to Clark's celebrated *Bichos* series of interactive works. The hinged metal planes invite the viewer's hands to manipulate and reshape the piece, blurring the boundary between artist, object, and participant. The warm metallic sheen of the anodized aluminum lends the work a sensuous, organic quality that belies the precision of its industrial material.