Historically accurate simulated divided light glass unit and methods of making the same

An insulated glass unit, comprising:

• a simulated divided light glass pane including:
• a single contiguous glass pane;
• the single contiguous glass plane having a plurality of glass slumped areas comprising surface characteristics;
• the surface characteristics of each of the plurality of slumped areas of the simulated divided light glass pane include at least one of waves, indents, unevenness, depressions, ridges, or swirls;
• a plurality of flattened areas defining perimeters of each of the plurality of slumped areas and the perimeter of the single contiguous glass pane;
• the plurality of flattened areas comprising a perimeter area located around the perimeter of the single contiguous glass pane and a grill area located between the slumped areas;
• one or more low-e glass layers;
• one or more spacer grills being secured to the grill area and located between the simulated divided light glass pane and the one or more low-e glass layersa;
• wherein the simulated divided light glass pane is configured to replicate a cylinder glass true divided light glass window.

A method of forming a simulated divided light glass pane, comprising the steps of:

• scanning, with a 3D scanner, a plurality of panes of one or more divided light glass windows to obtain surface characteristics data for the panes;
• designing a single replication pane of a divided light glass window based on the surface characteristics data of the plurality of panes, wherein the single replication pane includes:
• a plurality of slumped areas each replicating surface characteristics of at least one pane of a divided light glass window, and
• a plurality of flattened areas defining perimeters of the single replication pane and the plurality of slumped areas;
• casting a mold of the single replication pane, the mold composed of furan resin sand;
• positioning at least one layer of glass on the mold;
• and
• heating the glass to slump the glass over the mold to form a simulated divided light glass pane.