Youtube vid: Propellers

[ooglewoogle]

How its made: Propellers

http://www.youtube.com/watch?v=HT0YrvJoCmc

Apologies if this has been posted before....thought it might be of interest. Love these "how it's made" proggys!

[ollyit]

found that really interesting

[doggypaddle]

thats really interesting. i can see why stainless props are more expensive now!

[Nasher]

Agreed, very interesting

Nasher

[neilda]

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.