Welding on Aluminum Spars
Ahoy bm , my Forespar mast fabricated around 1985 has spreader bases welded right to the mast wall .
FWIW , author Nigel Calder says this , in his second edition of Boatowner's Mechanical and Electrical Manual ,,,, page 484 , " ......... any welds around the spar produce a week section prone to buckling. Notable in this respect are welded spreader sockets, especially where the sockets wrap a good way around the spar. "
As for mast wall compression at the spreader bases , are you thinking about Z spar's through bar spreader base system ?
Last edited by Douglas : 10-15-2014 at 08:30 AM.
Reason: additional information
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10-15-2014, 08:25 AM
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