Monday, 8 February 2010

Now onto laminating all the frames up - these are principally longitudinal frames on each chine to provide glue area to attach the ply. Each made up from three tim

bers measuring either 5”x3/4” or 3”x3/4” laminated together around the moulds to make up the main shape of the boat. Lots of clamps and balcot

an polyurethane glue were used. These timbers at there longest were 37’ so most had two scarfs to make up the lengths.

The five inch timbers needed to be steam bent around the stern as they had a compound style curve to them. All had a staggered style lap joint into the stem and stern post which had also been laminated and fixed to the moulds.

Interestingly while steaming some 16’ sections to get the aft bend around the sheer, inevitably some of the scarf joints got steamed too. They did not move or even lift at the feather edge - good old Balcotan.

All the joints were epoxy-glued and fixed with silicon bronze fastenings. Where required bolted together with stainless steel bar.

Above is the stem in place - Laminated around a mold. It has not yet had the stringers jointed into the ends. On the right is a detail of the

staggered style lap joint used!

Monday, 1 February 2010

Now having made up the male mold to build the hull upon (its built upside-down) I decided to start from the bottom (top?!) and construct the steel framework for the fin keel. A few reasons for this firstly being that i thought it was too cold (-5!) for gluing all the boat timbers together and secondly to give the timber more time to season (dry out). I had the timber for constructing the framework and masts for the boat cut back in September 2009. All this timber is Scottish Douglas Fir locally sourced.

The keel.

The shape of the keel is formed using 13mm steel re-bar. Again starting with a full size drawing of the profiles taken from J.Benfords offsets then carefully bending the bar to shape and welding all the bits together. This framework then gets three layers of mesh tied to it and two tons of cement and scrap iron poured in. I have decided to leave this until the summer months when its warmer to ensure a good cement cure. TBC...!!