Hello Fellow Builders,
as this topic is mainly a documentation about deviations from the manual. Here is a another one and its about painting the lower hull. There are three differences.
1. We used ~8 oz glass (see my previous post). This may add strength, but had the downside of not being really smooth after sanding the third coat of epoxy. We decided to apply a 4th coat using epoxy thickened with microspheres. This also helped to smooth the transitions at the glass overlaps. The consequence was another round of sanding the entire lower hull. Uff!
2. Our PS is intended to be a trailer boat and we decided NOT to apply antifouling but paint. We have good experience with a sailing dingy that stayed in the water for up to three weeks a couple of times. If in the water for more than a few days, applying some wax helps.
3. We want two part paint (paint + hardener) as we believe this is more durable and better suited below the waterline compared to one part paint. After mixing tons of epoxy, mixing paint is not really an issue. As a downside, we were told an epoxy primer is required. We painted the primer followed by another round of sanding the entire lower hull.
Choosing the color scheme was not easy. We were oscillating between 'British Racing Green' and the color scheme of PS1; finally its blue and white. It seems 'International' is not providing two part paint (any more?) and we bought paint from a well known supplier for amateur boat builder. Being in Europe we better stick to the RAL color scheme: We chose 'Cream White' RAL 9001 and 'Black Blue' RAL 5004.
The white color at the bottom was applied together with the white bootstrap in one go as one surface (the blue line at the bootstrap was painted on top of the white later). We applied three coats of white first, then two coats of blue. We had another round of sanding prior applying the final coat.
Its the first time we painted a boat of this size. The result is not perfect, but we are quite satisfied.
BTW: I believe
this explains why the finish on PS1 is looking great
Cheers,
Dietrich
Epoxy with microspheres after application (left) and sanding (right):
![lowerHull_4thcoat.png](./download/file.php?id=1128&sid=0d6e130aaf49281564be004f42b8efa6)
- lowerHull_4thcoat.png (243.04 KiB) Viewed 9484 times
Sanded primer (left) and final coat of white paint (right)
![lowerHull_primerWhite.png](./download/file.php?id=1129&sid=0d6e130aaf49281564be004f42b8efa6)
- lowerHull_primerWhite.png (214.75 KiB) Viewed 9481 times
The result after adding the blue paint and removing all tapes
![lowerHull_finished.png](./download/file.php?id=1130&sid=0d6e130aaf49281564be004f42b8efa6)
- lowerHull_finished.png (225.18 KiB) Viewed 9462 times