A step by step guide to making our wind turbine blades
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Step 1: Mould
We started of by making a mold. This was done by taking a piece of MDF and cutting/sanding it to the the desired shape.
Step 2: Fill With Polyfiller
The mold is then filled with polyfill so the concave part is 'filled'. This allows us to vacuum form the shape.
Step 3: Vacuum Forming
The mold is then placed in the vacuum formed. The desired thickness of plastic is chosen, heated, and the shape formed.
Step 4: Cut Out Shape
The blade is accurately cut out using a craft knife.
Step 5: Sanding
The blade is then sanded off and completed. It is ready to be attached to the axis.
Step 6: Repeat
This is repeated as many times as is needed. We used three blades.