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’97 Starcraft Corroded Transom Repair using Pourable Ceramic
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<blockquote data-quote="DaleH" data-source="post: 384680" data-attributes="member: 15636"><p>Dang it ... the rear skin had a tad more corrosion in it than I am comfortable with ... so I will replace it.</p><p></p><p>So now before the 'pour', I'll be de-riveting the stern piece and fabbing a replacement from a sheet of 5052-34 alloy I just picked up, 0.090", which ran me ~$160.</p><p></p><p>It turns out that the salt (chloride) corrosion travels laterally THROUGH aluminum,along the grain boundaries, which means you can't ensure you got it all out and as Barefoot Johnny states ... Ol' Lazarus (corrosion) will rear it's ugly head soon enough again. Like a cancer, I'll cut it out completely and replace the entire panel.</p><p></p><p>I'll try to get a good close-up picture of the corrosion I found where saltwater was allowed to weep and wick in between the wood and rear skin ... where it just continually ate away at the metal, exacerbated in areas where stainless steel (SS) bolts were put through too.</p><p></p><p>Ah well, that certainly pushes the 'pour' date ... and launch date ...back a few weekends.</p></blockquote><p></p>
[QUOTE="DaleH, post: 384680, member: 15636"] Dang it ... the rear skin had a tad more corrosion in it than I am comfortable with ... so I will replace it. So now before the 'pour', I'll be de-riveting the stern piece and fabbing a replacement from a sheet of 5052-34 alloy I just picked up, 0.090", which ran me ~$160. It turns out that the salt (chloride) corrosion travels laterally THROUGH aluminum,along the grain boundaries, which means you can't ensure you got it all out and as Barefoot Johnny states ... Ol' Lazarus (corrosion) will rear it's ugly head soon enough again. Like a cancer, I'll cut it out completely and replace the entire panel. I'll try to get a good close-up picture of the corrosion I found where saltwater was allowed to weep and wick in between the wood and rear skin ... where it just continually ate away at the metal, exacerbated in areas where stainless steel (SS) bolts were put through too. Ah well, that certainly pushes the 'pour' date ... and launch date ...back a few weekends. [/QUOTE]
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’97 Starcraft Corroded Transom Repair using Pourable Ceramic
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