Polygonal Faces

[Walks]

What's up everyone .... I've been using AutoCAD in a 2D world for quite some time but have only just recently dived into 3D. I've done a ton of modelling tutorials, etc. but am having a hard time with this particular problem.

 

I'm modelling a fan (I work at an HVAC engineering company) and for the life of me, cannot figure out how to create a face that involves multiple lines, arcs & circles of the object attached. The circle in the 'middle' is fine as is but I want to create a face or a solid of the object outside the circle. I've tried a ton of different things but can't seem to get the result that I'm looking for.

 

Any thoughts ??!! Help !!

[GhostRider]

I think a solid in that shape could be modeled by extruding a polyline of the outline, then you could copy a face .....

I'll try it and post an image to see if that is what your after

[Walks]

Outstanding !!! That's exactly what I'm looking for (bottom left).

 

So, what process do I have to go through to achieve this ??

 

Thanks a ton !!

[GhostRider]

you have the drawing shown in your first post, just create a closed polyline of the outline, using pedit join option and extrude it. extrude the circle in the center longer than your outer part and use subtract to create the hole...

I cheat creating the close polyline using a lisp called peditjoin.lsp it just makes it a bit easier, I think I got it here on this forum, from lpseifert or one of the lisp experts here..

 

(defun c:pj ()
 (setq pa (getvar "peditaccept"))
 (setvar "peditaccept" 1)
   (setq ssj (ssget ))
   (command "pedit" "m" ssj ""  "j" "0.01" "")
 (setvar "peditaccept" pa)
(princ)
)

[Walks]

Thanks GhostRider ...... very much appreciated