Tuesday, January 28, 2014
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Fairing Keel, fitting Centre Board & Sanding Hull
It's been 10 days since I last posted and I have been working most days since......and it's difficult to see the progress. Sanding and fairing is a slow process. I had no major issues to fair, other than the tail of the lead keel was veering to starboard slightly, so I made a plastic shuttering and filled with wood flour thickened epoxy.
That left a remarkably glass like finish.
I took several passes of creating a smooth radius fillet between the hull and keel with fairing epoxy, using a variety of sized tubes to create the radius and the sanding with the same tubes covered in 180 and 240 grit paper. Eventually I got a passable result.
Next I went about installing the centreboard. I measured carefully from the plans where to drill the pivot pins hole in the lead. I clamped the trunk cap onto the trunk with a 30mm piece of timber in the slot so that the CB would rest in the truck at the planned level, when it is fully hoisted.
I took lines form the existing hole in the CB and extended them to the bottom of the CB where I could see them in order to line up with where I needed to drill the lead.
Armed with my trusty auger bit and brace, Siobhan helped my sight up the bit so that I drilled a reasonably straight and level hole across the lead. When I first fitted the CB, it was inclined to sit proud from the lead, at a point 20" from the pivot point, where is was sufficiently recessed.
So I had drilled the hole at the correct depth, but for some reason which I haven't quite figured, the knuckle on the CB was hitting the inside of the keel preventing it coming up (or down depending on your perspective). I had to relieve some 1/2" from the knuckle of the CB which then allowed it sit home safely contained below the bottom of the lead.
Fairing Keel, fitting Centre Board & Sanding Hull
It's been 10 days since I last posted and I have been working most days since......and it's difficult to see the progress. Sanding and fairing is a slow process. I had no major issues to fair, other than the tail of the lead keel was veering to starboard slightly, so I made a plastic shuttering and filled with wood flour thickened epoxy. That left a remarkably glass like finish. I took several passes of creating a smooth radius fillet between the hull and keel with fairing epoxy, using a variety of sized tubes to create the radius and the sanding with the same tubes covered in 180 and 240 grit paper. Eventually I got a passable result.
Next I went about installing the centreboard. I measured carefully from the plans where to drill the pivot pins hole in the lead. I clamped the trunk cap onto the trunk with a 30mm piece of timber in the slot so that the CB would rest in the truck at the planned level, when it is fully hoisted.
Armed with my trusty auger bit and brace, Siobhan helped my sight up the bit so that I drilled a reasonably straight and level hole across the lead. When I first fitted the CB, it was inclined to sit proud from the lead, at a point 20" from the pivot point, where is was sufficiently recessed.
A delivery arrived from Classic Marine UK today which contained my standing and running rigging gear. I'm really looking forward to fitting all these goodies! But first I need to push ahead with painting the hull. I spent most of Saturday vacuuming around the shop and yesterday Brian and I did a final sanding then hung light polythene as a tent over the boat.
So tonight, I took the plunge and having tacked the entire hull, put on a thinned coat of underwater Hempel primer. It's like a silver paint and dried fairly quickly, I just painted the hull below the water line, as I have a separate primer for above the waterline. I'm not sure whether I am over complicating the matter with two different primers on the exterior of the hull - if anyone has any suggestions please comment below.
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