pentakisdodecahedron

[Canuck]

Wow Rolando...I still can't get past putting a puzzle like that together   Far too complicated for this 'crazy canuck'

[MarkMc]

Thanks  a lot Rolly Poly! 

I, like Master Chinnomotto, will still have to study up on all that you've posted here.  It will likely take a while before I get to it, but at least the info appears to be here. Thanks for sharing. 

[rolly_wood]

Maybe I teach you the soceer balls, Icosahedron and Triacontahedron derivatives, 4 inch balls that opens
You need a lathe, but I am working on a dimple version, no lathe needed

I have not the lathe. The dimple version is OK. I have seen your soccer balls on IPP site are beautiful!

Did you know when making the Merkaba, there are 2 versions, left and right mirrors

Many puzzles are either left or right even this pentakis12hedron!
Look how it rotates: http://www.youtube.com/watch?v=3yMTqLSBhvk it can be rotated also other siide

Use big colour pencils anD magnet the tips, then steel balls as the vertex  from Magnetrix kits, real cool

I opened the Magnetrix bars of my son (he did not use anymore and approved the sacrifice  ) and obtained neodymn magnets.
Then, with 48 of them I realized this one:

which assembled is:



Steve, John and Mark: thank you

Far too complicated for this 'crazy canuck'

  you would do it with closed eyes, I am sure. 

[Canuck]

Wow, this one looks more like my speed...would you mind if I attempted it?  Of course I would need details of angles and such
Keep in mind there's only one thing I do with my eyes closed   Assembling puzzles is definitely not the one thing

[rolly_wood]

would you mind if I attempted it?  Of course I would need details of angles and such

You are welcome but you need a child to steal him the toy of the magnets . I will post another topic tomorrow but if you look at the disassembled figure there are no problem: hexagons force one angle (30 degrees) and rhombic dodecahedron imposes the angle of the notches: 19.5 degrees.

But note this is not a puzzle: too easy

[Canuck]

But note this is not a puzzle: too easy

That's what I like about it...I need something to ease my mind

[Roby]

Looks like you could just squuese it in your hand and then have all the pieces pop back into place.   John, is it just me, or is Rolly overly humble about his work. 

[Canuck]

 John, is it just me, or is Rolly overly humble about his work. 

Yeah, I'm glad somebody else is thinking that as well!

[rolly_wood]

Looks like you could just squuese it in your hand and then have all the pieces pop back into place.   John, is it just me, or is Rolly overly humble about his work. 

Roby, it seems so but it cannot be squeezed, maybe one single hexagon but when they are so interlaced, the assembly is stable in geometry. Even too much, in case I will redo it (very unlikely) I would use weaker magnets

I am not so excessively humble, otherwise I would not have shown my works  but:
1) I am not a "real" designer, I take inspiration from others' work, apart from few exceptions
2) I am not "jealous" of my ideas I am happy to share them, if they were used it would mean they are not so bad.
3) I am new here, I prefer to maintain a low profile 
Thank you again.

[Roby]

So be it, but we are still amazed at your work.

[JWDiaz]

Hi all, I apologize for resurrecting this topic.  But, I'm in the process of making the jigs that will allow me to make the Pendo 90 and I can't understand the reason why on the short stick one of the notches measures 10.6 units while the other measures 11.9. Shouldn't the notches have the same width regardless of the difference in angle measurements? Please help!

[rolly_wood]

Hi all, I apologize for resurrecting this topic.  But, I'm in the process of making the jigs that will allow me to make the Pendo 90 and I can't understand the reason why on the short stick one of the notches measures 10.6 units while the other measures 11.9. Shouldn't the notches have the same width regardless of the difference in angle measurements? Please help!

The notches do have the same width (=1)  but since they are differently slanted on (one notch of) short and long pieces their projection along the piece's axis change; in particular for the (one notch of) short piece it should be 1 / cosine (20.3) = 1.066; for the long one (and the other one of the short) 1 / cosine (33.3) = 1.196. I rounded these figures to those above.
I underlline: they are not the width of the notches but how large the notches appear when obliquely cut.

[JWDiaz]

Rolly, I can't believe I couldn't see that. Thank you.