After planing the outer stems into shape, many hours are spent preparing the hull for fiberglassing. At the beginning of this stage, the hull is a series of edge glued rectangular planks and is fairly rough. The goal is to transform the hull, with all of its hard edges, into a smoothly curved, free flowing shape.
Fairing the hull is accomplished by first methodically planing the seams of the planks. For me, planing is one of the most enjoyable steps of the building process. I like it because you can see immediate results and I know that it is saving me a few hours of sanding.
After the hull has been planed, the sanding begins. It takes many hours of sanding to get things just right. Sanding is hard work and after several hours, becomes somewhat tedious. If planing is one of the most enjoyable steps, then sanding is one of the least. It is, however, the most critical step in determining the final shape of the canoe and much care must be taken to get everything just right.
After all of the highs, lows, and wobbles have been sanded out of the hull, the final step is to "raise the grain". Raising the grain is accomplished be wetting the hull down with water which swells the wood fibers. After the hull has dried, the raised fibers are given a final sanding with fine sand paper. This step will keep the grain from rising when the fiberglass and epoxy are applied. The wet hull gives us a preview of what the wood is going to eventually look like.
Showing posts with label outer stem. Show all posts
Showing posts with label outer stem. Show all posts
Saturday, April 16, 2011
Saturday, April 9, 2011
Attaching the Outer Stems
Once all of the planking has been completed, the plank ends are cleaned up in preparation of fitting the African mahogany outer stems.
A belt sander is used on the upper plank ends where the outer stem fits flush with the inner stem and planks. Just past the turn of the stem, to where the outer stem will end, the planks must be cut away so that the outer stem can be inset and attached to the inner stem.
The stems are fitted and then epoxied into place.
After the thickened epoxy has cured, the screws are removed and the stem is planed and sanded so that it is close to its final shape.
A belt sander is used on the upper plank ends where the outer stem fits flush with the inner stem and planks. Just past the turn of the stem, to where the outer stem will end, the planks must be cut away so that the outer stem can be inset and attached to the inner stem.
The stems are fitted and then epoxied into place.
After the thickened epoxy has cured, the screws are removed and the stem is planed and sanded so that it is close to its final shape.
Tuesday, August 25, 2009
Ready to Flip
After attaching the last two planks (sheer planks), we went to work fitting the outer stem and keel. Quite a bit of time was spent getting everything just right. An extra keel support piece was added where the keel meets the transom because the boat's keel will rest on a roller when not in use and the front of the boat will rest on a cradle.
Final fairing of the hull was completed before sealing the exposed plank edges with epoxy. Before removing the boat from the building jig, the entire exterior was sanded and then saturated with two coats of penetrating epoxy which was lightly sanded between coats.
Final fairing of the hull was completed before sealing the exposed plank edges with epoxy. Before removing the boat from the building jig, the entire exterior was sanded and then saturated with two coats of penetrating epoxy which was lightly sanded between coats.
Row, row, row your boat...life is but a dream.
Sunday, August 2, 2009
The Final Plank
All of the planks are on the boat although the sheerstrake has yet to be glued and trimmed to the gunwhale. Next, the outer stem will be fitted and the keel will be attached.
Row, row, row your boat...life is but a dream.
Labels:
gunwhale,
keel,
outer stem,
planking,
planks,
sheerstrake
Thursday, July 9, 2009
Don't Spare the Clamps!
Seven mahogany strips were cut to form the outer stem lamination. The strips are 3/16” thick which stack up to a little over 1 ¼” in total thickness. The 2 ¾” wide strips bent nicely over the inner stem. A plane will be used to clean the epoxy ‘squeeze out’ from the sides of the lamination. We will remove the outer stem and then reinstall it after the planking is done.
Row, row, row your boat...life is but a dream.
Subscribe to:
Posts (Atom)