We didn't really accomplish a lot this weekend. Saturday afternoon we went to work on the two mould stations that we have left to build. We are building them out of boards instead of plywood and it involves cutting angles on the outside of the boards and then putting cleats in to hold them together. We got mould station #1 to the point where we were ready to cleat it together and discovered that we didn't have any sheetrock screws that were short enough to do the job. So the mould station is sitting on the work table ready to be finished.
Today, we brought the plans for the laminated midships mould up and spread them out on the livingroom floor and marked the line where we will cut out the frame with the angles for the side planks. I had laid the plans on top of the mould and using my pin prick method, tried to lay out the correct lines for the frame. The result wasn't really good. We brought the frame up, laid it out on the plans and then using the line drawing on another depiction on the plans, we lined out the outline of the frame. We think we have it down okay, but it will probably have to be adjusted when we are planking the pram. Also, who knows how this frame will line up with the mould station #1 and #3 when we get it all on the building jig? We have a friend who is a wooden boat builder. He will tell you that you can make five boats out of the same set of plans and they all will have a slightly different shape. I can see why after this weekend's efforts.
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I wonder if they'd say the same at BIW? How much variation do you suppose there is between destroyers of the same class? (Probably plenty, but at that size we can't really tell.)
ReplyDeleteJohn says when BIW was making the PF's he used to make 4" pine "compression blocks" that were laid along the cradle for the ship. These blocks would compress and distribute the weight of the ship evenly where there were variations in the shape of the keel. So there you have it. There was variation, but not much.
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