: Thank you for the answer.

: For me is difficult to write in English, I=C2=B4m from Brazil. The same way,
: I´m not even an amateur in kayak construction, but trying is the best way,
: I think. I decided to begin construction after I did an ocean kayaking
: course, so I´m really a beginner. You wrote: "If I felt I had to do a
: model, I'd look around for some very cheap or even
: free used sheets of wall paneling and do a 1/2 or full size model with
: that..."

: Maybe I´ll try to begin with a 1/2 size model, as my brother suggested
: too. In this case, I´ll have to unite plywood sheets the same way if I had to
: built the full size kayak, right? One detail I´m thinking at this moment:
: the ramp created to united the plywood sheets. Can I handle it using a jig
: saw? Is this a very special part of the job or it is more scaring as it
: appears?

: PS - I live in the countryside of the state of São Paulo. There is no sea, no
: ocean, only little artificial lakes. The contacts I´ve been maintaining
: are only by internet and for me read books and take data from paper to
: reality is the main job.

Hi André,
As Bromasi posted, try card rather than paper. It will behave more like plywood.
With small scale models, accuracy is more vital than a full size hull.

Joining the pieces of plywood isn't scary. There are several way to do it.
One is to have the edges of the plywood together as they are and put an extra piece of plywood on the inside of the join. This is easiest but can make a harder place that does not bend the same as the rest of the plywood.

A second way starts the same with the plywood placed edge to edge but with a piece of fibreglass instead of the small piece of plywood on the inside.
Both of these are butt-joints.

A third way is to taper the edges of the plywood with the same taper and glue them taper to taper. When glued, the plywood bends like it is a single sheet or plywood. The easiest way to taper the edges is with a hand plane or a belt sander. If the plywood looks different on each face/side, pick one side to be the outside face and when planing the taper, put those faces together. That will make the same side of plywood face out when they are glued together.

The taper should be at least 8 to 1 slope. A 6mm plywood should have a taper 48mm wide at least with epoxy glue, better if it is 72mm wide using ordinary wood glue.

Hope this helps,
Mike Savage
South West Cork