Is RHINO 3D freeware ? It looks like  free for a  trial period.
https://www.rhino3d.com/download

Zahid Rahman


no

cost  about $1000 US

$300 for the student version

sign up for a night class on anything and once you have it drop the
class

Paul Lamar


The shaft was left in for reference only. The focus is on the housing
using aluminium tubes as per your suggestion. Also I don't know if
you looked at freecad it has modules for shafts and stress analysis.
I downloaded the Linux version as I use ubuntu , to play around with.
Zahid Rahman


I just installed it.

Looks like it might have potential. I have not been able to draw a
simple line yet. A vast majority of the tools are faded out.

Send me a file with a step by step on how to load and view.


Paul Lamar


There are dozens youtube video tutorials on freecad Here is 2:43
minutes  to start off with.
https://www.youtube.com/watch?v=xs1mFiJBYIo Zahid Rahman

Unfortunately it was written by inexperienced 3D cad users. Using 3D
primitives is not the way to go. That is way too complicated for a
user interface.

Rhino has no 3D primitives. Just 2D primitives. Circles, lines,
ovals, squares etc.,etc..

You make a 2D sketch and it becomes 3D when you extrude it.

There are four views on the screen. Front, bottom, side and
perspective.

A far far easier and faster way to learn 3D. Much much simpler.

One can start drawing in Rhino in five minutes.

Free CAD reminds me of Solid Works. Another nightmare user interface
:)

According to some of my CAD expert and teacher friends Solid Works is
slowly sinking into the mud. Fortunately.

Spend the money and get Rhino.

Paul Lamar


Paul I do have the student version as EAA member, they will accept it
, on the project almost ready I am machining the splines on main
shaft.

JEAN PRUDHOMME


     I've downloaded, but didn't use yet, a FreeCAD software from: www.freecadweb.org
    it seems that experts in the field that tried it indicate the software is powerful, but the
    user's information available in the web may be a bit limited; as you know, there's also
    a website: Desktop Aeronautics Inc, offering training in several elements connected to
   airplane design and aerodynamics, the site: 'Stack Exchange' maintains a forum on
  Aeronautics, from technical to passenger questions, where answers are of a very high
   level, from true experts in aeronautics. If you find this useful, please let us know.
       Thanks, have a good week. Best regards. Salut †
               Jose Gros-Aymerich
                Madrid, Spain





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