The trouble with PVC is that it is not good for making blades out of, it's weak, it has very little spring to it but will shatter when it goes cold or after it ages and off the top of my head I can't think of anything that will stick to it other then solvent based glues and those seem to only work because they melt the PVC, fiberglass will flake off, not something good to have happen to a spinning prop.
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