Abstract: A plurality of cellular shapes for honeycomb structures having cells of uniform size and shape are disclosed having movable expansion joint means built into each individual cell structure, which joints can tolerate large strains without breaking.

Abstract: In the hot forming of TV funnels from molten glass, heat is extracted from the glass in the moil area at a lesser rate than that in adjacent areas by providing relatively thin mold portions in such area and thereby producing more fluid glass which may be formed with lower pressing forces. Further, by reducing the wall thickness of the nose portion of a pressing plunger, internal cooling may be applied to such nose portion during the pressing cycle to cool such nose portion and contract it away from the moil area, and thereby prevent the formation of checks and cracks during plunger withdrawal.