AUGUSTA — Do-it-yourselfers looking to make their own personal palisade wall to ward off pesky neighbors can do so out of former, though not original, pieces of Old Fort Western. Fort officials are selling off 1,027 cedar posts that have formed the historic 1754 fort’s palisade walls since 1988. The palisades have been replaced with cedar posts as part of an improvement project at the fort that began last year and is expected to be done by May 15. Rather than haul the old posts off to the Hatch Hill landfill or chip them up into compost, the city is putting them up for sale from 9 a.m.