how to physically fabricate the rheotomic surfaces

Replies to This Discussion

Permalink Reply by Jaroslaw Sakowicz on May 7, 2011 at 2:38pm

first, it have to be solid, surface have no thickness. It could be printed in 3d  ( for example: i.materialise.com ) or cnc machined in pieces then assembled. what kind of material?

yarek,

Permalink Reply by mohammad shaiqueuddin on May 7, 2011 at 3:23pm

Mr. Sakowicz,

Thank you for you reply.

But the problem is, I do not have the facility of a 3d printer or a cnc machine.

The whole structure is a concrete mass( fairly high strength).

If you could help in under standing the basic rib fabrication process for this surface, that will be really nice of you.

I have been practicing fabrication of double curved surfaces using the rib technique and the string technique. I am attaching two of my projects.

Hope to hear from you soon.

 

Shaique.

 

 

Attachments:

• 3.JPG, 998 KB
• 054.JPG, 1.9 MB
• 6.JPG, 842 KB

Permalink Reply by Pieter Segeren on May 7, 2011 at 3:45pm

Hi Mohammad, if I understand you correctly ("ribs technique") I think that you'll find a lot of info if you search the forum for 'waffle'.
And please show us the result when you succeed in making this! :)

Permalink Reply by robert cervellione on May 7, 2011 at 6:47pm

you can try this definition see if it helps. it will generate the ribs, add notches and lay them out for laser cutting. also will give you 3D ribs if you want to print.

Attachments:

• fabLayout3.zip, 38 KB

Permalink Reply by mohammad shaiqueuddin on May 8, 2011 at 4:58am

Hello Mr. Robert,

Thank you very much for your support.

I tried the gh file but there is some surface evaluation problem occuring in the definition which I am not able to sort out.

I am attaching the rhino file alongwith this mail.

Kindly look into it to see if you can figure it out.

 

Thank you. 

Shaique.

Attachments:

• for fabrication.3dm, 401 KB

Permalink Reply by robert cervellione on May 8, 2011 at 7:42am

you have multiple surfaces. after bringing it in as a brep add a berp explode which will break it down to surfaces, then graft and simplify the F output and plug that in to the definition. 

 

-robert

Permalink Reply by mohammad shaiqueuddin on May 8, 2011 at 11:31am

Mr. Robert,
Thank you very much.
It worked, I am really grateful to you.

Thank you once again.

Shaique.

Permalink Reply by Chris Tietjen on May 8, 2011 at 8:47am

What do the four point parameters represent in your sample file?

Thanks.

 

Chris

Permalink Reply by robert cervellione on May 8, 2011 at 8:50am

the contour script takes two points to define a direction for the rib cuts.the ribs are cut in two directions so 4 points. move the points to control the direction of the ribs

Permalink Reply by Kehinde on March 24, 2012 at 8:06am

Hi Robert, I am currently trying to get the waffle rib with my Rhino surface but its not generating the ribs any ideas why? I have also try extruding the surface in rhino.

I have attached a print screen of how it looks.

Thanks.

Attachments:

• Rhino ribs.jpg, 578 KB