Nautilus Shell Cross Section

This cross-section model of a nautilus shell demonstrates one of the nicest natural examples of a logarithmic spiral.

See here for video: https://youtu.be/pzPjslekszg 

Print as oriented to get nice, crisp lines on the inner chambers. Raise the model off the build plate 3mm or so and generate tree supports underneath to support the contoured bottom surface.


Turritellid Seashell (long)

Some simple seashells based modelled from the common Turritellid seashell. 

See here for video: https://youtu.be/dUEOYucI38k 

The small spiral has six logarithmic revolutions; the large spiral has ten logarithmic revolutions.

Small:
Large:

Print as oriented with the larger end down. Raise the model off the build plate about 3mm and generate tree supports underneath. It is best to print at least two at a time for best results.

AI generated description:


logarithmic spiral

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Nautilus Shell Cross Section

Turritellid Seashell (long)

Turritellid Seashell (short)