Angus, as well as being a gentleman, scholar and a fine judge of horseflesh, is a prolific designer of boats, as we know.
In my spare time I attempt, in my modest fashion, to turn some of them into reality.
We have just started construction of the plug for a design called Bakers Dozen - for which Angus has swooped the rear deck (for me).
I thought it might perhaps be interesting to describe and show some of the steps in producing a plug for the hull - in Balsa wood. The plug can then be used for either:
Moulding hulls directly (fibreglass or papie mache)
Bottle-shrinking onto the plug
Vacuum forming hull and deck as seperate parts
Moulding a female mould from the plug - so that hulls can be moulded in the female mould with a good outside finish.
Your suggestions and contributions - including STOP welcomed.
BTW this identical process works with:
your own design of hull
Extruded Foam polystyrene
Flavio’s Presto - only once you have carved the plug you sail it!
No photos yet - they are still in the camera
This is what we begin with:
I have altered the profile view to show the Buttock lines (vertical slices) at exactly 6mm spacing, since I am cutting the parts from 6mm Balsa sheet.
Good News (and congratulations, Angus) - I can get all the parts from three sheets of 6mm x 100 mm balsa