Showing posts with label sheerclamp. Show all posts
Showing posts with label sheerclamp. Show all posts

Sunday, March 29, 2009

Starboard Deck Panel

Installation of the deck continued today with the starboard side deck panel. As with the larger deck panels, this one was coated with unthickened epoxy on its under side (although it conceivably have been done later, as there is access to it after installation, in contrast to the deck over the bow and stern compartments. The sheerclamp and carlins mating surfaces were then coated with mustard thickened epoxy. The deck panel was then positioned in place, and ring nails driven every 3 inches along the planed sheerclamp. Along the carlin, clamps were placed to hold the panel tight at that joint. As the nails reached the stern, I cut the panel with a sharp utility knife, using the overlapped panel as a position guide. Several passes of the knife were required to cut through the thickness of the deck. Once cut, the overlapped segment is removed and the deck will then lay flat, producing a tight butt joint. Underneath this deck butt joint, a reinforcing butt plate is epoxied in place with cabo-sil thickened mustard epoxy. I used an arrangement of pipe clamps and bar clamps to hold the plate tightly in place. The epoxy was then allowed to cure overnight. Total time 35.00.

Tuesday, June 10, 2008

Foredeck

Deck installation continued with the foredeck. This process was the same as previously described with the aft deck, except that the foredeck is significantly larger. It also must be worked into a sharper curve than the aft deck; the radius of the deck is 24" at the deck beam, compared to 30" in the aft section. To hold the deck in place, I applied a rachet strap at the location of the deck beam. I also used several spring clamps to hold it along the border of the cockpit at the carlins. Nailing along the sheerclamps every 3", and alternating sides every 4 nails or so eventually worked the deck into place. I found that my original positioning was a bit off, and the port side near the bow almost didn't cover the sheerclamp- put it came out flush, and will merely eliminate the need for much trimming in that area. Total hours 34.00.

Sunday, June 8, 2008

Aft deck

After a bit of a struggle, I finally overcame my procrastination and planed the sheerclamps, prior to deck installation. I'm not sure why I had avoided this for so long, but on the hottest day of the season so far, I used my inadequate, cheap block plane and worked the clamps into the proper angle. Two templates are provided in the kit- the angle of the sheerclamp aft of the forward hanging knee should meet a 30" radius curve. At the bow, the angle changes to a 24" radius curve. I found that little planing was needed in the forward area, but the 30" area took a good bit of planing to meet the proper contour. I won't say my planing was skillfully done, but the final result should be reasonably acceptable.
Then before dehydration set in, I installed the aft deck section. The precut part was first coated on one side with unthickened epoxy. This side then was turned to face the interior of the aft air chamber. The endpour, sheerclamps, and bulkhead surface were then coated with mustard thickened epoxy, and the deck was clamped in place. I also applied a ratchet strap to temporarily hold the deck to the proper contour. Next, bronze ring nails were driven through the deck into the sheerclamp with the aid of a gauge that allowed them to be positioned squarely in the center of the sheerclamp. I spaced the nails along the sheerclamp every three inches, driving a couple on each side, alternating sides all the way to the stern. Once the nails were all driven, I wiped up some mustard epoxy drips, and went inside for a cool drink. I now know why boat builders tend to set up shop in Maine! Total hours 32.75