Modelling exercise

Since modelling in SolidWorks is so easy, we usually start our SolidWorks
lessons - as an introduction to solid modelling - by letting the attendees
to model this simple wheel. (http://naakka.dyndns.org/misc/wheel.jpg) Go
ahead and give it a try!

-h-

 

I know how to do it ! (go to http://www.goulu.net/science/escher.htm for
similar work)

btw, how to draw 3 triangles with 6 matches ?

 

I know how to do it ! (go to http://www.goulu.net/science/escher.htm for

Interesting concept, but far too complicated. The wheel consists only of
straight extrusions.

-h-

 

Hi Heikki
A nice illusion.
I like it .I have sent you a copy .
I wander what is the extra body you have got.

Dudi Peer
eds-eci

 

I created a very large assembly of a city and then wrote several vba
scripts to animate different subassemblys. It all runs on a very
large network.

Here is a screenshot of the model:

http://www.seclorum.us/swx/swx.jpg

-=BAHR=-

 

I can draw 4, does it count?

 

Did it. See http://www.dynabits.com/gallery/index.htm
Suprisingly, I had more problems with the "central" small cube than with the
rest of the structure...
There must be a simpler way...
I''ll try to make it the "Escher" way now.

 

Did it. See http://www.dynabits.com/gallery/index.htm

Cool, you made it almost as David Peer did. Mine was a bit more complicated,
I can send you my version.

I tried as well, but the result didn't seem as natural, since SW doesn't
render the silhouette edges of the sweeps very accurately. Besides, the
shading and possible textures reveal that the spokes are not straight.

-h-

 

Sure ;-) my mistake... I meant 4 of course...

 

made a new, even simpler model with "straight" and "Escher" configurations
Check http://www.dynabits.com/gallery/index.htm, there's even an anim of the
thing rotating.
Shading with wood structures is ok, spokes look straight...

The new model uses a "body copy/move" feature to orient the central cube
instead of a bunch of construction planes.
looks simple, BUT I couldn't figure how the 3 angles are defined.
Reached a fair approximation, but if anyone knows how to calculate the 3
angles exactly, the math side of my brain could sleep better this night.

Are you aware of any copyright / IP related to this shape ?

 

finally a solution ! ;-)
now what about 4 triangles with 6 matches ?

 

4 _closed_ triangles:

Think of the 6 edges of a pyramid: they form 4 triangles