Paul and Jean, Scaling the 3Dm  surface model is a single
  command operation
  if you are scaling  to the same scale.I looked up a few Piaggio
  designs and
  found the listed airfoil as a NACA 23012 at the root and a 4412 at
  the tip
  on both the main wing and the stabilizer and a NACA M-12 on
their P7
  series.  You may want to leave the wing scaled down less than the
  fusaloge.          Hopefully the DXF files will have the airfoil
  elements plotted with
  the flap amd aleiron % of chord, if not the ordinates can be
  downloaded. I
  search      ae.illinois.edu canard airfoils     and use the reverse
  directory to find out what is used on airframes of similar
  designs, then the
  main list for the ordinates.  Personally I like the Harry Riblett
  airfoilson the main wing, and Rontz on the canard.

          Have you got any idea what prop clearance you need at
  the rotation
  point on take off.  I am thinking at the stall angle of attack
of the
  canard  something like 8" clearance.  It is not as much angle as
  it seems
  since the incidece on the canard has 3 degrees more incidence  The
  full size
  version has five blade props so you will likely need a minimum of
  threeblades with one RH and one LH to get the disk diameter scaled

  down to a
  workable size.
         We will need to know if the CNC foam cutting shop wants
  the airframe
  sliced into workable size pieces or would want it as a complete
  solid that
  he can devide up at his location.  As I remember the depth of the
  machineaccomodates 20" deep sections and the width and length are

  something like 5
  feet by 20 feet
           When you start looking for Glass cloth you might want
  to call
  Steve Thayer at  thayercraft.com in High Point NC.  I get 73 inch
  wide from
  him which reduces the number of seams. He has 3 million yards on
  hand and
  probably that much more lost to the inventory system. They ride
  bicycles to
  check stock quantities. He is building a Cozy and flies a
Cessna 175

  george grimes

 Do you guys have a shop picked out for making the mold Bucks?
The cnc
 machine I use is
 able to cut 20" deep x 80" x 18ft long, longer if the mold can
be put on an
 angle [depending
 on the o/a width of the buck but upwards of 20ft would be
possible]. I'm in
 the process of
 getting a 5 axis head [head/head style] designed and built for
it, should
 make building
 molds/bucks that much easier over my current 3 axis system.

 Interestingly enough, I've actually designed my own 'Piaggio'
type aircraft
 but have never built
 it to date. I'll send some pics of the model later today.

 Jarrett Johnson



 Jarrett,      You are the shop we are hoping to have do this
project, The
 compound curve stuff in particular and likely the wings parts as
well  depending on budget.


george grimes


Sounds good George,  it's tough to duplicate [if not impossible] the accuracy and
quality of finish via machine vs doing it by hand, granted one applies a reasonable
value against their time.

Jarrett