The "Nautilus"

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The "Nautilus"

Postby semm » Thu Mar 15, 2018 6:24 am

Hi All,

New to the forum. I have been tinkering with a side profile based on the logarithmic spiral, a common shape in nature. I have attached my spreadsheet point calculator if anybody wants to give it a try. There are only 3 parameters to play with, so quite easy to adjust the profile. The start and end points will require adjusting manually to bring them back to y=0.

My particular example is designed to make the most of a particular sheet size and I think is quite an attractive profile.
Attachments
nautilus_side.xls
(106 KiB) Downloaded 51 times
nautilus_side.xlsx
(39.01 KiB) Downloaded 61 times
Last edited by semm on Fri Mar 16, 2018 10:29 am, edited 1 time in total.
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Re: The "Nautilus"

Postby tony.latham » Thu Mar 15, 2018 10:34 am

semm wrote:Hi All,

New to the forum. I have been tinkering with a side profile based on the logarithmic spiral, a common shape in nature. I have attached my spreadsheet point calculator if anybody wants to give it a try. There are only 3 parameters to play with, so quite easy to adjust the profile. The start and end points will require adjusting manually to bring them back to y=0.

My particular example is designed to make the most of a particular sheet size and I think is quite an attractive profile.


I opened it up, but It's not showing a profile. There's a bunch of entrees with degrees, radians and then lots of "#NUMBER?" entries.

I'm curious. :thinking:

Tony
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Re: The "Nautilus"

Postby semm » Thu Mar 15, 2018 11:36 am

tony.latham wrote:
I opened it up, but It's not showing a profile. There's a bunch of entrees with degrees, radians and then lots of "#NUMBER?" entries.

I'm curious. :thinking:

Tony


Do you not see the graph with the plotted points?

Steve
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Re: The "Nautilus"

Postby semm » Thu Mar 15, 2018 12:01 pm

Image after creating a dxf from the points.153504
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Re: The "Nautilus"

Postby tony.latham » Thu Mar 15, 2018 12:23 pm

Do you not see the graph with the plotted points?

Steve


Nope! All I see is a blank graph called "Chart Title." (Excel 208)

I'll confess: Excel is a bit of a mystery to me. :?

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Re: The "Nautilus"

Postby John61CT » Fri Mar 16, 2018 8:39 am

They keep updating file format versions, new software defaults to latest version old ones can't fully read, gets more people to upgrade.

Save As, pick an older version file format, much more compatible.

Nice curve!
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Re: The "Nautilus"

Postby semm » Fri Mar 16, 2018 10:29 am

Spreadsheet has also been attached in an older format.

Steve
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Re: The "Nautilus"

Postby Pmullen503 » Fri Mar 16, 2018 11:45 am

Fun to play with! Thanks!
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