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I know the horse is out of the barn but I also leaned the hard way (when feathering lapped glass cloth) it is easier to remove epoxy and not the adjacent material if you use a scraper and not a power sander. And scraping is easier the greener the epoxy, 24 hours of cure is good timing. A scraper is also the easiest way to remove epoxy runs or drips. If you buy one you will be glad you did by the time you complete your boat.
Dave
This is an archived message from The Kayak Building Bulletin Board.