Sail Lifevideo
⛵️ How to patch a hole the COMPLETELY wrong way. Ep 677
May 3, 2026 · 22 min · 72K views
What this video covers
To prepare a mold for replacement windows on a 44-foot catamaran, the cabin top requires a perfectly fair surface where a previous window opening was removed.0:43 The project involves filling the void with a luan backer and scrap MDF blocks, then fairing the surface with polyester putty.1:51 Because the MDF is prone to swelling, the surface is sealed with three coats of gel coat containing wax.6:06 To ensure a clean release for the mold, the surface is sanded, waxed, and coated with PVA.12:15 This analog method confirms the accuracy of previous 3D scan data, which had identified minor surface irregularities that were also detectable by hand.9:04 Separately, a Victron Energy Cerbo GX and smart shunt are installed in a shipping container to monitor battery state of charge and provide alerts during shore power outages caused by a VFD tripping GFCI breakers.14:56
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