Having got all the stations fitted, I now take the moulds down, one by one. Firstly, I have to cut them in half and then hold the two halves together by butt-straps.
|Three butt straps holding the two halves of the mould together|
The reason I have to do this is that I will not be able to remove the moulds from the finished boat as they will be too tight a fit. So what I have to do, when the boat is finished, is remove the butt-straps and then the moulds can be taken out of the hull in two halves.
Whilst the mould is out, I cut out a notch 1" x 3" (25 x 75mm) to accept the hog: which is a long piece of timber (1" x 3") that lies on top of the keel.
|The notch for the hog|
I now return and secure the mould back on its station, making sure it is exactly vertical and aligned along the centre line. To do this I tie and stretch a piece of string along the centre of the notches I have cut for the hog (remember the boat is built upside down, with the keel on top.)
Having got the station accurately back in place I give extra security to it by adding stays that secure the uprights to the strongback
|Stays holding the station in the correct posotion|
As you might have noticed, constructing the building jig is very time consuming, but, just like a painting is only as good as the drawing beneath it, so a boat is only as good as the building jig upon which it is built.
I have to resist adding, in every post: 'fingers-crossed', 'hopefully', 'with any luck'.