Boat Repair, Restoration, Building
I never did get the fiberglass to work to my satisfaction on the topsides. I tried again with smaller batches in cooler weather, but still got the fiberglass veil I spoke of in my earlier post. So I stripped it off again, decided not to stain the boat but just let the natural woodgrain show, and moved on.
A man’s got to know his limitations.
–Dirty Harry
I have not failed. I have just found 10,000 ways that won’t work. — Thomas Edison
Adding a layer of fiberglass cloth to any wooden boat will add an enormous amount of toughness to it. And if you do it right, the fiberglass is invisible. That’s right — invisible. The problem is in the “doing it right” part.
Okay, let’s step back a bit. Continue reading “Fiberglass Setback”
Last time, I talked a little about cutting the flat along the keel so I could put a cap over it to keep from having exposed end grain there. My friend Steve asks, “Well, exactly how did you do that?” (or words to that effect). It did, in fact, take a little bit of doing. So I decided to explain myself a little better in a follow-up post. Continue reading “Cutting the Flat”
The twist in the bottom planks at the bow is pretty extreme. When it becomes impractical to clamp enough twist or curve into a plank to fit it properly, it helps to be able to get it closer to the final shape before you pop a blood vessel in the struggle. Continue reading “Steaming the Bottom Plank Blanks”
The final topsides plank is fit and glued in place. Huzzah! It took a long time to get here because I elected to vacuum bag each plank individually. I wanted the tightest seams I could get. And in order to do that, you need to know the plank you’re fitting against isn’t going to move, even slightly. Without locator screws, which you can use in traditional boat building, you don’t know things will go back together exactly as they did during the dry fit. The topsides gets a lot of scrutiny on any boat–perhaps not as much as the deck, but it’s what people notice first. Continue reading “Final Topsides Plank and a Patch”
Last month, I described in detail the process of scribing, cutting, and fitting the first strake of final planking on our Palm Beach 22 mahogany runabout. If you missed it, I suggest you go back and take a look. It’s a necessary precursor to the process I’m about to discuss.
Laying up each plank and fitting it is a time consuming, although satisfying process. Refining your skill in creating light-tight seams between planks is a worthwhile pursuit. The better you are at scribing the previous plank edge onto your new blank, the quicker it goes. It’s a time-honored skill among boat builders. But let’s take a look at a more efficient method. Continue reading “Fitting the Next Planks Using the Router”
Our final layer of planking will run longitudinally to look like traditional carvel planking in this build. That’s where the longitudinal mahogany planks are laid edge to edge and screwed to the underlying frames. When it’s complete, you end up with a very smooth, fair hull with seams so tight you can’t even feel the transition from one plank to the adjacent one. Well, that’s the ideal, anyway. These boats worked because the seams tightened up after the boat was in the water a few days–tight enough to keep most of the water out. And while it’s helpful to remember we’re building a boat and not a Steinway piano, with a little know-how and patience, we can get reasonably close to that ideal. We’re going deep into the weeds in the next couple of posts so bear with me. Continue reading “Fitting the Mahogany Layer on the Palm Beach 22”
After three layers of 1/8″ planking, it’s time to fair the hull. In some builds, particularly those with a painted hull, you might wait until after the final layer is on. But with only 3/16″ thickness in the final layer of mahogany, you can see how it’s advantageous to get the hull nice and fair before it goes on. Sanding through the mahogany to get a hump out would be disastrous. Continue reading “Fairing the Hull Before the Final Layer”
Having completed the 1st layer of planking, and being careful to edge glue each plank, we had to make sure we had an air tight surface for pulling a good vacuum. So we rolled on a coat of neat epoxy and then followed that with a scrape-fill of epoxy thickened to the consistency of mayonnaise. Continue reading “Cold Molding the Next Layer”
Having set up the framework for the boat, with all the structural pieces glued in place, it’s time to put a skin on it. Traditionally, boats were either Carvel planked (with seams that are ideally invisible to the eye because they’re flush and tight), or Lapstrake planked (where one edge overlaps the edge of the adjacent plank, creating “strakes”). In both of these traditional methods, solid lumber is used. Long boards are attached to the framing with calking in the seams to keep them watertight. Continue reading “Planking – The First Layer”