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post #9 of Old 10-18-2013
overbored
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Re: repairing dent on the mast

I use the mandrel to hammer against the same way you would do car body work. the mandrel need to fit the contour of the inside of the mast but not to tight . only needs to fit tight where the dent is. I used a long 2x4 to push the mandrel into the mast. taped it in until it hit the dent. had another person tap it in as you tap on the outside of the dent. it is combination of both the mandrel pushing it out and the hammering on the outside. that moves the metal. first one I used very hard wood with the grain going across the mast. the second one we used a mandrel made out of Delrin plastic. and we left the Delrin in the mast as a spreader. that mast did not have internal halyards or any wiring

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