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02-04-2011 #1
Though making the blades isn't CNC related, just the mould is, I thought I'd post this as I'm sure there will probably be people here who know more about using polyester resin / glass fibre than I do.
This is my first attempt at making anything with fiberglass, except a couple of stators for the wind turbine which is just a very simple casting, and some small sheets as a test for strength.
First I made these two moulds on my CNC router:
The blades are 700mm long, tip speed ratio 7.
I've coated the mould in a random tin of furniture wax we had lying around but were never going to use. Not got any pictures of that.
To be continued...
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