On Tue, 18 Nov 2003 18:43:02 -0500, DSK wrote:

Core should be tapered to a solid laminate where there is hardware thru-bolted.

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That works of course, but there are other ways. Drilling an over size
hole, coating exposed core with epoxy resin, refilling with solid
glass, and then redrilling is a perfectly acceptable method of
ensuring core integrity and absorbing compression loads.