MJ Sailing · video

What this video covers

DIY boat builders painting a catamaran interior head use Alexseal 501 topcoat in Cloud White, mixed at a one-to-one ratio with a converter, reducer, and accelerator.12:39 The process requires extensive surface preparation, including epoxy fairing, sanding with 320-grit paper, and thorough vacuuming and wash-downs to ensure a dust-free environment.4:42 For application, the crew uses a $150 spray gun with a 1.0 tip and PPS cups, testing flow rates on craft paper with a professional painter to determine optimal settings.17:28 Initial attempts result in excessive paint output, heavy overspray, and runs, requiring the crew to sand the surface back down using a Mirka nib sander and foam blocks.18:55 Subsequent coats are applied in a temperature-controlled environment using heaters and ventilation, with the crew wearing Tyvek suits to prevent contamination.23:32 The final finish achieves a high-gloss, durable surface that complements the boat's white oak trim.24:49 Proper gun calibration—specifically limiting fluid control to one or one-and-a-half rotations—is essential to prevent runs and achieve a professional finish on complex, tight interior surfaces.19:19

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