The first strakes, the garboards, have been mounted! Or ar least they have been screwed in place, ready to be epoxy-glued.
I have been working for what feels like days on the first garboard to get a good fit. The strake needed to be shaved and sanded to get the right bevel so it makes a nice close fitting with the backbone. Also the backbone needed a treatment with planer and belt sander. And then there is the issue of joining the garboard with the stem…it involves a lot of torsion and tension. Finally I screwed it into place, accepting a small gap between garboard and back bone between the mould in station 9 and the stem. I’ll fill it up with epoxy.
The second garboard didn’t cost as much time as the first one, so getting that done only cost me one day.
I’ve not yet mounted them permanently as both strakes are going to need a bevel to receive strake nr. 2. For this they’ll have to be removed again and planed on the workbench before final fitting with epoxy.
Today the boat was turned for the first time. It was a very nice and satisfying event! I invited some friends to help, and it turned out to be a pretty uncomplicated manoeuvre. Only at the end, as the boat was already on it’s new supports, there was the need for an improvisational sawing action; the clamp needed for turning was in the way of the rear support, so the support was modified. Problem solved 👍🏻😃
During the past few days I’ve been preparing for turn-day. But before that can be done there were many small tasks that needed to be done;
The false stem was laminated. The first picture is where I made the mould, the second is a dry run without epoxy to see how it goes, and the last picture is the real thing.
After the false stem was put in it’s form, I opened up the plastic sheet to wipe away surplus epoxy. That worked fine, but the bottom side couldn’t be reached, so there is a rather large “epoxy-beard” to be sanded away later…
These are the clamps on which the boat will turn upside down later on. The idea was stolen from stansboat.wordpress.com. Thanxx 😉
There were some joints that needed fillets before turning the boat. I decided to experiment a bit with adding glass bubbles to the epoxy glue; it is supposed to make the resin lighter in weight and easier to sand when cured. The first attempt was mediocre; I mixed in the maximum recommended amount of 25% by weight which created a rather difficult to work with substance. Maybe good as a filler, but not for making fillets. In a second go I tried 10% glass bubbles which seemed to work better; applied with a piping bag created nice smooth fillets.
And finally, today Loïs gave me a hand producing the first of two supports that will hold up the boat once turned over. Tomorrow the second one.
Turning-day cannot be far away anymore!
Mounted the last frame today, the nr 5 half frames. To do so I needed to get the temporary spacing boards in place; frames nr 5 need these boards to stay in the right position as the epoxy glue cures. Before being able to mount the longitudinal spacing boards, the mould (station 1) between transom and bulkhead nr 2 needed to be mounted as well. Well, you get the picture; before being able to get one thing done, three other things need to be fixed first…
Here’s the pics;
After epoxy coating the transom and the two longitudinal bulkheads that hold it, there were a few more tasks before the transom could be mounted; the locker floor boards had to be glued in place to give the construction that extra stiffness it needs to carry the heavy transom and bulkheads. (The first photo shows the aft locker construction that provide the wanted stiffness, the second photo shows the front locker floor that I mounted in the same go)
And besides that I wanted to make the bevel on the transom. The transom consists of a slightly larger, thicker inside layer and a slightly smaller, thinner outside layer. The difference in size determines the angle of the bevel. I roughed out the bevels (9 planks each side) with an electric band sander.
On this picture the bevel for the top two planks have been made, the part that receives plank nr 3, 4 and 5 still show the untreated condition.
Once those jobs were finished, the transom was mounted. I decided to go with the tactic to mount two planks to the longitudinal bulkheads with clamps, and pulling those planks to the boat with another pair of clamps. Like so;
After a dry run, the epoxy glue was applied and the whole thing put in place. After the position was secured a epoxy fillet was made at the places that where reachable. This mornings my I was able to remove the clamps and see the Ebihen in it’s full length for the first time 🙂
Before I can go on and mount the rest of the aft parts, I needed to do some epoxy coating. There were three parts, the transom and two motor support parts, that needed coating on only one side and three other parts, the locker floors, on both sides. What I used to do on all parts that needed coating until now, was lay as many parts down on the work bench as possible and apply three layers of epoxy with approximately 3 to 4 hours of drying between them. That way it took me two days to have both sides of a part coated; only the top side can be coated and that layer needs to be dry before the part can be turned over to have the other side done.
Today I decided to hang the floor boards by a string on the tent’s roof structure, so I could get both sides done in one day.
The final result can only be judged tomorrow, but the coating itself was not as easy as doing flat lying parts. I did save some time, but the whole business of applying treacly epoxy to a rocking peace of wood was quite messy…
Yesterday Roel and I mounted bulkhead nr. 2 and the under seat longitudinal bulkheads. After rejecting many other options to get the job done, I decided to with the tactic of applying epoxy glue to all joints and simultaneously put all three parts in place. That left us with approximately 15 minutes to fix all parts in their final place. The use of many clamps was planned, but along the way there was also the need for a rope and some wooden supports.
After removing the clamps today, I was satisfied with the result; it seems like bulkhead nr. 2 is straight and perpendicular to the backbone, and the longitudinal bulkheads are level. So I dry fitted the transom to see how it looks.
Before actually fitting the transom I’ll make the bevels for planking, and fix the locker floors.