WWII Corsair Cockpit Interior

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When your process control is good there is no reason for hand fitting. All parts are within tolerance and they will fit without any monkey business. That is the purpose of good mechanical engineering and process control, you get optimum fits at minimum cost.

That is how the Ford Willow run factory built so many bombers. It was a 200 million dollar factory that from the beginning was designed to assemble the 4 engine B-24 bombers. The takt time of that factory was 57.6 minute per plane.

Here are some of the statistics:

• 488,193 parts
• 30,000 components
• 24 Major subassemblies
• Peak production- 25 units per day
• 25,000 initial engineering drawings
• Ten model changes in six years
• Thousands of running changes
• 34,533 employees at peak
• 100% Productivity improvement