Saturday, January 21, 2012

A Good Test


After building frame #1, the closest frame to the transom once, i decided to build it again. The first time the bevels were off where the verticle frame peices met the horisontal. Also the frames were drawn so that the loft lines are in between the trhree pieces. It was a little rough to wrap my head around that, in fact i still can only get it done one step at a time.

To really get a grasp of this i needed to get some sort of order of operations.  In the Free Form construction that Roger Fletcher lays out . http://www.amazon.com/Drift-Boats-River-Dories-Construction/dp/0811702340 It appears that the Bevels need to be as perfect as possible so that the plywood hull pieces wrap around the frames with no distortion.  Here are some pics of the process.
I cut the bottom frame piece to the inside of the loft lines.
I cut the vertical pieces a 1/2 inch long at the bottom to accommodate the bottom bevel as well as give some meat for clamping.
Next the bevels get marked onto the horizontal and vertical frame pieces. The long bevel up the vertical piece is done with the table saw than after it is all screwed down a sander gets the bevels looking like this.
Nice and clean, this frame i would install in a boat, to bad its not made from the cedar i bought, one more test frame with the opposite bottom bevels, figure out the chine log notches and i think the real thing will be happening. Like anything you just gotta take your time.





1 comment:

  1. Mark enjoying your blog. Will send to grandpa. Ed said a couple of his friends kids just built a drift boat. Plan on building a kayak next. Showed him pictures of your kayak to get them started.

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