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 Post subject: Re: Unique and Novelty Designs
PostPosted: Tue Nov 04, 2014 10:09 pm 
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Hi ArsAntiqua,

Quite an interesting design. I hope you don't mind, I took the liberty of rounding off the indices and constructing a makeshift pavilion in GemCad. I'm sure you can construct a better one. Please take the time to finish this one off and don't forget to put your name on it. Hopefully someone will take the time to try it out and if it performs well perhaps add it to the Gemology Project.
http://gemologyonline.com/Piazza_Campidoglio.pdf
Cheers,
GR


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 Post subject: Re: Unique and Novelty Designs
PostPosted: Wed Nov 05, 2014 1:12 am 
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Wow,

That's great! Thanks.

I should explain: I never got around to a pavilion as I was thinking of doing this as a rose cut in an opaque stone to use for a set of cufflinks. I actually hadn't thought about doing it as an actual gemstone. Also, I hadn't rounded the indexes as I was trying to see if it would possible to perfectly recreate the pattern from the piazza. Actually I had to make a few simplifications as the actual design in the piazza features several tiers of ovals then a few tiers of circles and then goes back to ovals. Pretty complicated. So, I guess there's no harm in simplifying the indexes.

I found a measured drawing in a book on Italian pavements which I imported into Adobe Illustrator in order to get the coordinates of the meetpoints. Then I worked it out in GemCAD which yielded the split indexes. I'd like to see if I can actually perfectly recreate the design with all the intricacies including adding some width to the radial lines (see the white bands in aerial view of the actual piazza).

Honestly, this was one of the first designs I've ever put together so I really don't know anything yet about optimizing designs for light return.

The piazza, by the way, was designed by Michelangelo.


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 Post subject: Re: Unique and Novelty Designs
PostPosted: Wed Nov 05, 2014 3:59 am 
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Great idea ArsAntiqua to consider modifying the design for opaque material. I can just imagine how nicely it would scintillate in black spinel 8) . It would be great to see your finalised design on this one and a few photos of the finished works. I hope you find the time to complete it [-o<

Cheers,
GR


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 Post subject: Re: Unique and Novelty Designs
PostPosted: Wed Nov 05, 2014 5:45 am 
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You might want to look at another topic - "introducing Morpheus" and see if Ken would cut the pattern with fractional indexes.

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 Post subject: Re: Unique and Novelty Designs
PostPosted: Wed Nov 05, 2014 11:45 am 
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Great idea, Tom. Ken's machine opens a huge new range of possibilities. This sounds like a good test case.


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 Post subject: Re: Unique and Novelty Designs
PostPosted: Sat Nov 15, 2014 10:29 pm 
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I would like to take the horse head and change it to a cow's head, Brown Swiss, but not very good at GemCad yet. I'm thinking about doing it in Citrine Quartz.

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 Post subject: Re: Unique and Novelty Designs
PostPosted: Mon Jan 01, 2018 1:15 am 
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hi, does anyone know where to get widow Spydey by Greg Glenn. As the US Facettor Guild Website no longer has it on their site. Thanks In advance.

Deb :?

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 Post subject: Re: Unique and Novelty Designs
PostPosted: Mon Jan 01, 2018 10:56 am 
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moonshadow_dancer wrote:
hi, does anyone know where to get widow Spydey by Greg Glenn. As the US Facettor Guild Website no longer has it on their site. Thanks In advance.

Deb :?

I don't know how this got lost. It was definitely there at one time - Art Kavan wrote an article about cutting it in 2009.

Found it on the Yahoo usfgfaceterslist. I'll see about restoring it to the official USFG website.


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 Post subject: Re: Unique and Novelty Designs
PostPosted: Tue Jan 02, 2018 6:09 pm 
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AlBalmer wrote:
moonshadow_dancer wrote:
hi, does anyone know where to get widow Spydey by Greg Glenn. As the US Facettor Guild Website no longer has it on their site. Thanks In advance.

Deb :?

I don't know how this got lost. It was definitely there at one time - Art Kavan wrote an article about cutting it in 2009.

Found it on the Yahoo usfgfaceterslist. I'll see about restoring it to the official USFG website.

Thanks Al That would be much appreciated :D

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 Post subject: Re: Unique and Novelty Designs
PostPosted: Tue Jan 02, 2018 10:14 pm 
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I found an old scanned PDF here on the Aussie Lapidary forum

Link
http://aussielapidaryforum.com/forum/in ... ttach=2797

Update: I've been test cutting this while working on my software, so I can provide .gem or (.gcs) files if anyone needs them. PM me.

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