Steve’s Boat Building An amateur’s attempt to build a strip plank dinghy

These three components need to be very accurately machined and aligned, as they define the fore and aft curvature along the bottom of the boat. I used the same technique that I used to make the formers to get precise curves. However, because I do not want to spoil the final appearance with nail hole marks, I first made MDF templates, and then, having rough cut the plywood, I used a bearing guided straight router cutter to trim the ply to the templates. When I machined the sides of the centreboard case, I clamped them together, and drilled a 4 mm hole at each corner, where the holes will be eventually be concealed by capping, as well as a 2 mm hole to define the centreboard pivot. I then clamped the fore and aft spacers to one side, and used the router to shape the spacers, through which I drilled matching 4 mm holes. As I assemble the centreboard case, I will insert 4 mm diameter stainless steel pins through the holes to ensure that the sides exactly align, as shown in the photos below.

The centreboard case and fore and aft girders

Alignment pin

Alignment hole