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Old 23 April 2010, 11:10   #1
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Youtube vid: Propellers

How its made: Propellers



Apologies if this has been posted before....thought it might be of interest. Love these "how it's made" proggys!
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Old 23 April 2010, 11:27   #2
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found that really interesting
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Old 23 April 2010, 14:23   #3
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thats really interesting. i can see why stainless props are more expensive now!
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Old 23 April 2010, 14:46   #4
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Agreed, very interesting

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Old 24 April 2010, 04:39   #5
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I liked how it went from Mrs Miggins dipping them in wax to robots handling them.......

I had always assumed that props were made using the lost wax method (wax mold set in sand and then steel poured in). Seems a very long winded method to create a ceramic coat over the wax model and then pour the steel in -there's a reason for it, but I have no idea why.
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