Desilu then ordered a larger filming model, which Datin contracted to Volmer Johnson and Production Model Shop in Burbank. Datin supervised the model makers and did detail work on the model, which was constructed from plaster, sheet metal, and wood. When completed, it was long, weighed , and cost $6,000. The filming model was delivered too late to be used much for the initial pilot, "". The 11-foot model was initially filmed by Howard Anderson. When Roddenberry was approved to film the second pilot, "Where No Man Has Gone Before" (1966), various details of the 11-foot model were altered, and the starboard windows and running lights were internally illuminated. When the series went into production, the model was altered yet again, and it was regularly modified throughout its active filming. Most of the fine details on the large model were not visible to television viewers. Anderson's team struggled to film the model in a way that suggested it was moving at tremendous speeds, as the producers wanted to avoid the cliched look of a spacecraft drifting through space.