I pointed one end of 3/8 rebar for stake and added emt conduit over rebar for smoother rotation. Drill hole in bottom of 4' vertical piece and store emt and rebar inside post - securing with same bolt and nut used for upper section thru hole in bottom. Made 3/4 and 1. inch poles about three years ago as a test. After three years I can't say there is enough difference to waste time thinking about it other than the cost of material. Only problem we have ever had is very light weight flags tend to wrap around upper pole in light and variable winds.
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Suzie & Chuck USNR USAF USCGA Challenger Owners Club 2015 37KT Challenger, Demco Commander tow bar, Ready Brake, Sewer Solutions, Safe-T-Plus 41-230, 5-Star tune, towing 2017 Ford Edge FWD 3.6L V-6 four down & 385 FastTrack kayak in the basement.
Summer - Creede, CO Winter - Okeechobee, FL
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