08-22-2012, 11:05 PM
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Never tried myself but I do work around plastic for a living and you don't hammer things into plastic like you do wood. Typically we drill and tap screws into plastic, 8-32 or 10-32 are what we commonly use. If the plastic is real thin like some of the plastic fencing I've seen you'll have to use a backing piece to prevent it from ripping out.