[quote=CatsailorMike]i've done epo rudders using this. prep as dogboy says and then mix this graphite powder filler with your resin and roll on followed by "tipping" with a foam brush to flatten out. let it cure and wet sand with 600 or finer to get a glass smooth, low friction surface.
http://www.westmarine.com/buy/west-system---423-graphite-powder-12-oz--323659[/quote]
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