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post #7 of Old 01-04-2012
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I would talk to a spar specialist. The many small holes you have reduce stress concentrations much better than one or two large holes. If you make one or two large holes you may start to get cracks raidating out from the hole. Think of stress like flowing water in a stream. The water can flow around many small obstructions easier than flowing around one or tow large obstructions. This is what leads to stress concentrations and then cracking.

BTW, once the wires go into the mast, are they just loose or do they run into a conduit? Mine are loose and I need to do somthing about this- don't like them ratteling around in the mast.
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