March update: inside job

Yesterday we discovered, that spring is near and work needs to be accelerated to get the boat done. Thus, from now on we will try to do longer days on Friday, Saturday and Sunday, with emphasis on the last two. Both lower planks are on, stringer notches have been completed, port stringers beveled and sanded. Joosep has been sweating epoxy on planking, so in theory, we have the port planking covered. He also finished building our first fore buoyancy compartment, complete with paint, our new foam filler, Styrofoam and epoxy. The “room” between the buoyancy and cabin got a double floor too. The canopy has been completely glassed: next is test fitting windows. Lets have the 1000 words:

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The sweetheart of Uku: watertight door for the fore compartment. Note the the luxurious handle. Both sides glassed. The four holes are for locking nuts, more on that in later posts. I have the greatest plans for painting and finishing this lovely novelty. Thanks to Doug Jackson for inspiration! His watertight doors for SV Seeker really are a piece of art.

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A shot of the fore buoyancy compartment. Later to be filled with foam, Styrofoam and epoxy, topped off with a plywood seal.

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This is what our initial painting looks like: the aft buoyancy compartments on either side of the footwell, below aft shelves. This is a water based paint, simple, but more is not needed. Underneath is epoxy and glass. Two coats of paint.

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Uku taking off the beveled stringers. It took some time and a sharp plane to complete the job. It was difficult for Joosep to work on the inside with the stringers on both sides, rather acrobatic and frustrating.

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Fresh investments: a new 30 kg patch of West System epoxy resin. In total, we have bought 60 kg. In the foreground are the component “A” and “B” of the expanding filler foam. Experiments need to be done, as our initial mixes have resulted in a somewhat brittle foam, which crumples up like sand when pinched. Too bad that component “A” and component “B” do not have dispensing pumps like the larger brother in the back.

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Not really the latest fashion finish on the windows: last bit of glassworks on the outside of the cabin.

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Joosep pouring the expanding foam onto our last bit of double floor between the cabin and watertight compartment. Speed of action was of greatest importance here, as the foam expanded fast.

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Before adding the weights and plywood to the intermediate cabin section. In theory, this is the room for storing water, straight under the mast.

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Joosep testing the patience of his nerves: glassing the cabin roof from the inside. So, another lesson learned: this should have been glassed forehand. Now it was a pain.

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Fine weight system for putting pressure on the buoyancy compartment plywood as the foam expanded underneath.

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Car tires, lead-acid battery and a bunch of plain lead.

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A new friend of the chisel, kife and hand plane. They are not dull anymore, sharp like the finest minds.

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Our planks, stringers and in the back an airplane wing being built our hosts, the Technics club of the University of Life sciences.

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The result of component “A” and “B” when mixed.

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Glassing never stops: Joosep working on the watertight fore compartment.

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Our delicate moments of recreation!

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Just to check whether the weight lead is level or not. A high degree of perfectionism on not that high tech double floor.

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Joosep pouring the foam.

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This is what our bouyancy compartment is mostly filled with: blue compression proof Styrofoam.

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Joosep bought some inspection hatches. Made in China, looking good. These will go into double floors for ventilation purposes.

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A shot of the cabin from the cabin door.

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A letter

Hello!

This is me, I am writing from the cold Estonia with a warm heart. I have not sent a postcard for a long time, was out of ink and stamps. Yesterday we steamed some stringers and ended up with a cageboat hard to work in. Here is a picture of this:

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We developed a new technique for avoiding steamed-stringers cracking from knotholes. Namely, we used screws to fasten a 40 cm long piece of leftover stringer over the knotspot: on the outer side of the bend. We managed to bend some rather knotted wood like this. In general, no-one has yet recommended leaving a knothole in the stringer superstructure, but we hope to repair the to-be-evoked weaknesses by applying glass fabric over the knots. The steamer is still functional, by the way. Here is a picture of this as well:

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The wood held even after removing the brace. Well, that’s that. Other than that, it is going fine. Days are getting longer, since the spring is approaching. There is more sunlight and vitamin D, or whatever it was called. Nevertheless, it puts a smile on peoples faces.
Joosep has pioneered a new technique for mixing epoxy and fillets. With a drill and a mixer bit. Does a fine job. “The epoxy is of a lot better consistency when mixed like this,” he says. I was afraid initially, that the glue would foam up, since it is a polymer, but that did not happen. Again, that is a good method for diferentiating generally between organic and inorganic substances: if it foams up, then it is organic. Here is Joosep proving me wrong with this new fast epoxy mixing method:

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Also, there are new planks on the way:

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It looks good from the inside as well:

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There is still some work to be done inside the cabin. For this, we have to remove the upper stringers. But that is not a problem, they are, for now, held in place with screws. The starboard plank will be due in a week or so. Meanwhile, Joosep and I are pondering on vacuum laminating techniques. We think that this would give faster and better results than we have had so far. First steps have been stepped in the direction of this new concept. We are looking for old fridges for salvaging the vacuum pump. There is a brief overview article on this DIY concept here: http://myweb.cableone.net/bcanderson/Boatz/Vacuum/Vacuum.html
Joosep has also been working on the cabin seats. Have a look:

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I think that is it, I don’t know what to write anymore. There will be more in the future. I hope you are doing well, take care.

Sincerely,
the nerds

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Watertight inspiration

This is our inspiration for making a watertight door for the forward bulkhead, more details to come, including a SolidWorks drawing. Joosep is working on creating a text on hull dynamics and soon we’ll put up a longer video post of the work we did today. That is, scarf jointing, beveling and seats.

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