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leeminardi
en respuesta a: gmiller24QYP7V

After converting the meshes to surfaces I tried using SURFSCULPT to create a solid (after adding planes to define a watertight volume).  SURFSCULPT was unsuccesful as it was still not finding a watertight volume.

 

I suggest using the section command to define a series of section cuts from the 3D surface model.  Years ago I was involved with a college team building a concrete canoe.  We could use the section cuts to layout the cuts on 2" thick styrofoam to create either a male or female mold.

 

Note that simply scaling a duplicate of a model and then "scale it up for an outer mold or down for an inner mold to make a mating mold giving the canoe its final thicknes" will not yield a shape with uniform wall thickness but may be close enough.  This may be  a moot point as I do not think you need a solid with a wall thickness, just a male or female mold of a "filled in" canoe.

lee.minardi