The spar now is a real one!!
The last process consists in preparing
and gluing the plywood webs.We used for the plywood the up-and -in
method , according to the manual.The plywood was cut in a bigger
size to work without the problem of messing everything up.Then we
made the scarfs joints and we had two big pieces of plywood each
face,leaving the central junction to be glued afterward.Then we
signed all the faces of the webs using allineament nails.Try not
to use big nails neither drill the spar for them.Gluing up
was done with the help of few nails and on the jig ,to correct the
errors of the spar,clampig from both sides.
Then we masked the internal face of
the glued web and the still-to-glue one.After havig completed the
joints the only thing to do was trimming the plywood at the same
size of the spar and we used a milling machine for the purpose that
saved us a lot of time.
We used the same machine to do all
the bigger holes on both sides of the spar and then, we finally
could start to follow the manual eliminating the need of a lot of
thinking time on how to build and to solve problems.
It takes a little of time but when
is finished it gives you some satisfaction!