Method for casting concrete panels

A method of making concrete access floor panels adapted to be supported on pedestals, said method comprising the steps of:

• forming a metal pan having a planar bottom defining openings and peripheral sidewalls;
• inserting the metal pan into a two-part mold, said mold including a part defining a thin mold cavity having a cavity bottom and cavity sidewalls dimensioned to receive the metal pan in a slip fit fashion and said mold including another part defining a flat surface facing said mold cavity;
• placing a smooth magnetic sheet within said mold cavity against said cavity bottom and between said cavity bottom and said planar bottom of said metal pan, said sheet dimensioned and disposed to engage the planar bottom of the metal pan to prevent seepage of a concrete mixture through the openings in the planar bottom during casting;
• filling the pan within the mold with the concrete mixture;
• clamping the mold parts together;
• rotating the mold about an axis;
• and
• vibrating the mold while it is being rotated to evenly distribute the concrete mixture within the pan.