I'm building my wind turbine out of materials that I have available, or can obtain for free. The main construction will be mostly of wood or MDF. There are no doubt much better materials I could use, but this is just a hobby, so I'm using what I have available.
That said there will be some items that will have to be bought. For me, these are:
Neodymium magnets, AKA: Neo, NIB, NdFeB or rare earth
Enamelled copper winding wire.
Stainless steel rod, nuts & bolts etc...
I am not an expert in building wind turbines so some of my reasoning behind the decisions I make during the build may be way off, but that's all part of learning. The design will most likely change as we go along. Although I have a CAD model draughted. It's just to get some visual ideas of how the parts will fit together. Don't be surprised if we get "so far", then go back a few steps to work around an unforseen problem. Hopefully that won't happen, but it's possible.
Any electricity produced by the wind turbine will be stored in 12 Volt batteries. An inverter will be connected to the battery bank to provide 240V @ 50Hz. My aim is to power all the lighting in my workshop. I have tested a 240V compact flourecent lightbulb using a very cheap inverter and a car battery. Hey presto, we have light. So the idea seems good. Let's see if we can make it work.....