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[quote]QUOTE: Oh, I'm sure it would work... through the foam. However, I would still have the plywood underlayer to get through, and would need the same length drill to get to it anyway, or trust in aligning a hole drilled from the underside with the hole heated from the top. I'll consider using the long bit I've got, but a 3/8" bit is really overkill. I guess I'm a little bit over-cautious, but I'll probably invest in a smaller bit that will do the just "just right." Brian [/quote] Maybe I wasn't clear, but what I meant was, drill a, say, 3/8" hole from the underside that would only be as deep as the plywood underlayer. Then from the top, pu***he hot wire thru the foam, and thru then 3/8" hole in the plywood. You'd have a small hole on the top, and a bigger hole on the bottom. John
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