3V 5/9 Kruschke Geodesic Dome

[Hesham Elfeshawy]

Hello, I am interested in building a 3V 5/9 Kruschke Geodesic Dome and would like to ask for guidance on how to prepare the coverings for it. Specifically, I would like to know how to create paper patterns that can be used to cut PVC for the dome structure. Could you please provide instructions or resources on how to create these paper patterns accurately? I would greatly appreciate any assistance or advice you can offer. Thank you for your time and assistance. Best regards, Hesham El Feshawy

[Travelling Telescope]

Hi Hesham,

Here is a link to the cover calculator on the Domerama site which I found to be an invaluable resource for building my 3v 5/9 Kruschke.

https://www.domerama.com/calculators/cover-templates-for-3v-59-geodesic-dome/

Hope it goes well!!

Chu

On Sat, 4 Nov 2023 at 10:38, Hesham Elfeshawy <shu...@gmail.com> wrote:

Hello, I am interested in building a 3V 5/9 Kruschke Geodesic Dome and would like to ask for guidance on how to prepare the coverings for it. Specifically, I would like to know how to create paper patterns that can be used to cut PVC for the dome structure. Could you please provide instructions or resources on how to create these paper patterns accurately? I would greatly appreciate any assistance or advice you can offer. Thank you for your time and assistance. Best regards, Hesham El Feshawy

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[Hesham Elfeshawy]

Chu 

Thank you for guiding me into this request 

I have checked Domerama but I was looking for something more different that I can insert the dome information into a calculator then get a printable drawing patterns that I could cut the PVC and swing 

Just trying to save time and get more accurate results 

But I thank you once more for being helpful 

Regards

Hesham El Feshawy

Sent from my iPhone

On 4 Nov 2023, at 2:46 PM, Travelling Telescope <daniel...@gmail.com> wrote:



To view this discussion on the web visit https://groups.google.com/d/msgid/geodesichelp/CAApebLxfKZXCbWxkg7R-jiPfcOwGbTbPu%3DyhwOpETaJJMKwDhQ%40mail.gmail.com.

[Travelling Telescope]

Hi Hesham

I'm almost 100% sure that someone in this group will know but until they can help you can try Small Stella - a PC app (mine is a mac so I don't know it too well) but I think it can do what you're looking for, although I'm not sure if it can do the Kruschke method - but maybe worth a try!

https://download.cnet.com/small-stella/3000-2053_4-10064284.html

Good luck again!

Chu

To view this discussion on the web visit https://groups.google.com/d/msgid/geodesichelp/3D72D2FE-2B95-4770-875A-B73BD4F808A1%40gmail.com.

[Gerry in Quebec]

Hi Hesham & Chu,

Small Stella does produce cut-out nets for some geodesic domes, but not for the 3v icosa Kruschke dome. I think I can do this in Antiprism and will give it a try.

As for the dome cover diagram and data set on Domerama (http://www.domerama.com/wp-content/uploads/2012/10/10-foot_3v_59_cover_calculations.pdf), users should be careful with that document. While the lengths given in this downloadable PDF are correct to my knowledge, the former owner of the site, who died a few years ago, made at least three presentation errors -- the main one being that he confused spherical diameter with spherical radius. So the lengths given in the distance table for the 10 ft diameter Kruschke dome cover are actually for a dome with a spherical radius of 10 ft.

I assembled the Excel calculator that generated the distance table and Antiview diagram that still appear on the Domerama ''ghost ship'' website. The data and diagram were uploaded without my permission, and I received a pretty nasty reply when I objected. That was 10 years ago.... water under the bridge.

- Gerry in Québec

[Gerry in Quebec]

Hesham,

Here's a net of the 3v 5/9 Kruschke dome, generated by Antiprism/Antiview. The five large polygons, each with 5 sides, make up the floor of the dome.

Is this the type of printable file you're looking for? If so, it can be colour-coded to show which edge is which. The four edge lengths can be calculated using the desired spherical radius and the chord factors. Edge length = chord factor x spherical radius.

I'm not aware any integrated calculator out there in Dome Land which allows you to output a cut-out net for a Kruschke dome for a selected radius.

- Gerry in Québec

[Hesham Elfeshawy]

Gerry

Thank you for sharing the net of the 3v 5/9 Kruschke dome generated by Antiprism/Antiview. It's interesting to see the floor of the dome composed of five large polygons, each with five sides.

I am new to Antiprism but i will work to understand it

Thank you for your time and assistance. 

Best regards, 

Hesham El Feshawy