Some years ago I constructed a model using this software but now after a few attempts I cannot seem to find it on Stella.
It is almost identical to a Rhombicosahedron but with rectangles rather than squares,

Hi,

I wish to construct a shape from different coloured hardwoods that is as near to a sphere as possible
I have a CNC machine
Any ideas

Hi Rex,

Thank you for your interest in my work.

I very rarely show my work. However, only last Saturday, at a local woodworking show I entered four of my constructions.

My table looked very 'plain' in contrast to others ... just a wooden table ... no decorations .... no literature ... just the ...

Thinking ahead ...

Can I put the augmentation that produced say layer 16 (from the London Gherkin) into memory?

Then, using this layer as my staring point, build up the remaining layers to produce the top part of the model.

Or...... Will I need to start from scratch with an antiprism with the ...

http://i257.photobucket.com/albums/hh225/Squeaky2011/Layers-1to14.jpg
http://i257.photobucket.com/albums/hh225/Squeaky2011/Gherkin05.jpg

With a great deal of assistance from members of this forum I will, over the next few weeks, be constructing a model of the London Gherkin.

The top photograph ...

http://i257.photobucket.com/albums/hh225/Squeaky2011/Layers-1to14.jpg

Thanks for your very kind help Rob

I will be using this shape as the base for my model. From the 'nets' I can extract all the triangle details (length of sides and mitre angles).

Without your programme I very, very much doubt ...

http://i257.photobucket.com/albums/hh225/Squeaky2011/Layers4to10.jpg

Hi Rob,

I am happy with the shape, so far, but cannot seem to be able to augment any further.

If I sent you a copy of the file could you possibly show me how to add a further three layers to each end of the current shape.

The ...

http://i257.photobucket.com/albums/hh225/Squeaky2011/Gherkin05.jpg

http://i257.photobucket.com/albums/hh225/Squeaky2011/Gherkin05copy.jpg

I have attempted to build as you suggested (using 'convex hull) but I am still experiencing some problems.

After seven augmentations the programme/computer ...

http://i257.photobucket.com/albums/hh225/Squeaky2011/SevenlayerGherkin.jpg

As you will see, from the above, I have made quite a bit of progress today using your 'alternative' method of construction.

Two points ......

1.... I am not sure how to augment to a specific face .... I think I am ...

Thanks!

With a little more work on this method I am quite sure I will be able to achieve what I need.

I need to do a bit more on this shape ... then work out how to get all my mitre angles and side lengths

Thanks for your advice .... will read youe advice very carefully

I have been messing about alll afternoon and have built (and saved) the above.

Now, after reading your posting, I will have a go at augmentation

http://i257.photobucket.com/albums/hh225/Squeaky2011/Gherkin01.jpg

I would like to create a truncated pyramid from the above octagonal antiprism.

How, exactly, do I select all the facets from the right hand view and create a truncated pyramid?

For this trial lets say the the base units are 3 ...

Dear Robert,

Thanks for your posting

I just wish I could get really going on this project.

Can you please look at my 'shape'.... the one that I posted this morning then, step by step, explain what I do next.

I need to progress .... with the bit in Ulrich's posting .....Create an 18-gon

How do I ...

I have now got so far with this project.... Is this correct?

Now.... How do I created an 18-gon from the original vertices at the top and a smaller 18-gon from the first ring of points at the top , then the lateral triangles?

I am back from Namibia

Please Ulrich.... or anybody kind enough to help a 'struggler'!

How do I get '18 Fold Pyramidical' in the 'Symmetry' box.

Squeaky