and, 24 hours later, with the second coat
Total work time to date:653 hours
Diary on the construction of a Seaclipper 20, a plywood trimaran designed by Jim Brown and John Marples. Our boat's Sail No. is 50. The boat has been named GEODETICA and was launched on september 28th, 2024.
Sunday, May 27, 2018
Painting at last
So, here we are at painting. We decided to make a first test on the daggerboard. We first washed it with running water and Scotchbrite to remove the blush, and then we gave it a light scrub with 240 grit sandpaper. And here we begin with the first coat
and, 24 hours later, with the second coat
Total work time to date:653 hours
and, 24 hours later, with the second coat
Total work time to date:653 hours
Thursday, May 17, 2018
Press stop
The experiment went well: the new enamel is definitely harder than the previous one, so we're going to use this one. Actually, the paint on the first samples continues to get harder after one month, and it cannot be dented anymore with a nail... We still have to decide the exact colors, however the idea is to paint
the hull sides and bottoms with bright red while decks, cockpit and akas
will be light grey.
Saturday, May 12, 2018
Paint shop
Now we're ready to paint. However, the first test with the water based acrylic enamel was not positive because it proved to be too soft once cured: it can be easily dented with a nail. That's why we decided to test another water based enamel before surrendering to nastier stuff like 2-part paints. We bought a can of white water based polyurethanic enamel, semi-matt. This is the professional line of a well known manufacturer and is supposedly much better and harder than the first one. We'll see.
Sunday, May 6, 2018
Filling the weave completed!
Five more hours this week end to complete sanding of the vaka deck/cockpit and subsequent coating with clear epoxy (almost 800 grams). Here's a pic taken yesterday during the sanding session
and here's one taken this morning after the second coat.
You can see the milestone beer on the left because Cinzia protested when I tried to put it on the freshly coated deck.
In the meantime we tested the paint samples prepared before. While it looks that enamel adheres well on cured epoxy, the water based acrylic enamel (latex?) that we tested seems too soft. After three weeks we can easily dent it with a nail, so it's either too soft or cures too soft on epoxy. On the other hand, the two-part polyurethane enamel that we tested before is much harder albeit very unpleasant to apply. We'll soon try a one-part water based polyurethane enamel.
Total work time to date: 651 hours
and here's one taken this morning after the second coat.
You can see the milestone beer on the left because Cinzia protested when I tried to put it on the freshly coated deck.
In the meantime we tested the paint samples prepared before. While it looks that enamel adheres well on cured epoxy, the water based acrylic enamel (latex?) that we tested seems too soft. After three weeks we can easily dent it with a nail, so it's either too soft or cures too soft on epoxy. On the other hand, the two-part polyurethane enamel that we tested before is much harder albeit very unpleasant to apply. We'll soon try a one-part water based polyurethane enamel.
Total work time to date: 651 hours
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