Harold Hahn method of hull construction

John Garnish explains some enhancements, in the pursuit of accuracy, to the Harold Hahn method of framing a hull, a procedure which assembles the component parts upside down on a building board. He introduces tools and accessories to measure the correct alignment of all members of the complex structure that is the skeleton of the model of a wooden seagoing vessel thus avoiding the all too often occurrence of a deformed hull. This presentation was given to The Society of Model Shipwrights, 28 May 2021.

[@danharig3596]

A true pleasure to listen and learn from you. Your voice and delivery are quite soothing, also your creativity and craftsmanship impeccable.

[@boriskatic7910]

You Sir , are a wonderful craftsman, thank you for your advice. Best regards from Australia.

[@andreastimper9848]

Actually, many builders use a similar building-board to build their models the right side up, instead of upside down. Especially in Europe, where Hahn is not that well known, dockyard style models are built that way. Michele Padoan‘s models are a very good example of how this is done.
Also, building a model just the way it was done back in the day, is entirely possible. Just look at the work of Ab Hoving, who builds 17th century Dutch vessels using the plank-first method the Dutch used then.
What I personaly dislike about Hahn is that in his own plans, he used generic frames instead of the historical ones. When you go to the length of building a plank on frame model, why not go the whole nine yards and do it correctly.
His upside-down method certainly has its merits, though.

[@addisth]

I like the Monty python