Wk3: Oyster Ring Holder
![Desktop Screenshot 2020.04.21 - 01.09.17.45.png](/proxy/?url=https://content.instructables.com/FK1/ZXR6/K970A0XA/FK1ZXR6K970A0XA.png&filename=Desktop Screenshot 2020.04.21 - 01.09.17.45.png)
This project is a collaboration between my partner Nicole and I. We were brainstorming on possible projects when Nicole suggested a ring holder. This subject supported our goal of collaborating on something that is both beautiful and functional.
After some introductory sketching helped us rough out the design concept, I imported an image of an oyster shell into Rhino for tracing. I used the bezier tool to construct a closed curve based on the image of the oyster.
Supplies
3D Printer, filament
Extrude Curve to Point
![Desktop Screenshot 2020.04.21 - 01.10.26.60.png](/proxy/?url=https://content.instructables.com/F52/STEO/K970A0Z1/F52STEOK970A0Z1.png&filename=Desktop Screenshot 2020.04.21 - 01.10.26.60.png)
With the curve, I used ExtrudeCrvToPoint to turn the curve into a polysurface roughly shaped like a pointy shell.
Extrude Surface
![Desktop Screenshot 2020.04.21 - 01.11.02.38.png](/proxy/?url=https://content.instructables.com/FZV/RSGF/K970A0ZQ/FZVRSGFK970A0ZQ.png&filename=Desktop Screenshot 2020.04.21 - 01.11.02.38.png)
I then used ExtrudeSrf to transform the surface into solid geometry suitable for printing.
Transform
![Desktop Screenshot 2020.04.21 - 01.12.11.37.png](/proxy/?url=https://content.instructables.com/FXV/HX25/K970A0ZR/FXVHX25K970A0ZR.png&filename=Desktop Screenshot 2020.04.21 - 01.12.11.37.png)
At this point, I scaled the shell shape up to match my desired dimensions.
Conical Primitives
![Desktop Screenshot 2020.04.21 - 01.13.09.01.png](/proxy/?url=https://content.instructables.com/FHZ/X69A/K970A11H/FHZX69AK970A11H.png&filename=Desktop Screenshot 2020.04.21 - 01.13.09.01.png)
I used the cone primitive in Rhino to construct the base and the ring holder itself.
Extrude Curve (again)
![Desktop Screenshot 2020.04.21 - 01.14.32.16.png](/proxy/?url=https://content.instructables.com/FDB/VDQY/K970A11I/FDBVDQYK970A11I.png&filename=Desktop Screenshot 2020.04.21 - 01.14.32.16.png)
For the bed of the shell, I used the original traced curve and executed a simple extrude command to transform the curve into a thin platform that rests on the main shell mesh.
Test Print Story
![Desktop Screenshot 2020.04.21 - 01.50.56.10.png](/proxy/?url=https://content.instructables.com/FQO/ATX7/K970A11J/FQOATX7K970A11J.png&filename=Desktop Screenshot 2020.04.21 - 01.50.56.10.png)
![Desktop Screenshot 2020.04.20 - 20.30.17.48.png](/proxy/?url=https://content.instructables.com/F5A/1R5W/K970A11M/F5A1R5WK970A11M.png&filename=Desktop Screenshot 2020.04.20 - 20.30.17.48.png)
![IMG_3830.jpg](/proxy/?url=https://content.instructables.com/F44/0NLS/K970A67J/F440NLSK970A67J.jpg&filename=IMG_3830.jpg)
After going through the design flow once, I decided to do a test print of the cropped ring holder to test it with a real ring.
I'm glad that this was possible. This test print revealed that our ring holder shaft was far too large. Going back, I resized the ring holder shaft and added a small divot to make it easy to store a pearl up there.
Images From Cura
![Oyster Ring Holder Slices](/proxy/?url=https://content.instructables.com/F2M/QO2C/K970A4PJ/F2MQO2CK970A4PJ.jpg&filename=Oyster Ring Holder Slices)
![Desktop Screenshot 2020.04.21 - 00.33.22.66.png](/proxy/?url=https://content.instructables.com/FC2/WPUJ/K970A13C/FC2WPUJK970A13C.png&filename=Desktop Screenshot 2020.04.21 - 00.33.22.66.png)
Video and image from the slicing process.
Resulting Piece
![ring-holder-1.jpg](/proxy/?url=https://content.instructables.com/F5D/NZK0/K9ACPHAO/F5DNZK0K9ACPHAO.jpg&filename=ring-holder-1.jpg)
![IMG_3837.JPG](/proxy/?url=https://content.instructables.com/F9R/IW7Z/K970CHJN/F9RIW7ZK970CHJN.jpg&filename=IMG_3837.JPG)
The print came out very well.
We are planning to sand out some of the roughness and paint it.