Product Name "CLaDOS Ring". Designed by QUATRO.
Please note that this ring will come in a solid color/material! So please choose carefully! White plastic is good for DIY painting while steel and silver ones will shine your way to stardom :)

If you cannot find your size OR you just don't wear rings - try taking a look at my pendant!http://shpws.me/3NxX
Want to know more about the product?
Available in a variety of materials
The default size is ~20.32 mm in inner diameter but you can customize the size to your liking.
Click personalize to choose your US ring size.(Size support: # 8 to # 13.) Please refer to sizes at this page.

Conversion chart for ring sizes:

US Ring Size - Inside diameter
8 - 18.1mm
9 - 19.0mm
10 - 19.8mm
11 - 20.6mm
12 - 21.4mm
13 - 22.2mm

I hope you like this piece as much as I do:)
Be sure to tell a friend! Shop more at:
http://www.shapeways.com/shops/uncleQUATRO :)

Working centrifugal compressor.

Designed to fit standard Mabuchi 130 motors.

Printed and tested.

Upon receiving the item, you'll need to use a 1.8mm drill bit to drill out the center hole. This is due to limitation of the printing process that may not allow the shaft of the motor to be inserted.

This is a working demonstration of a mechanical iris diaphragm.

WARNING :- Please note the tolerances are a bit tight and depending on print orientation it may require a bit of cleaning.

Will post photos and videos later.

Early Video :- http://www.youtube.com/watch?v=fLSfJjS7QUE

Better but short video :-
http://www.youtube.com/watch?v=GXf9ck0LAYo

I made this cufflink on request of a shapeways user, who ordered my GE90 fan cufflink.
I write this to let you once more know that I am even happy about orders or wishes from anyone who likes my work. If I think your whish is doable and/or worthwhile, I might create it.
Making this entire cufflink took me less than one hour which is good, even for me. ;)
This is the fan (big propeller if you will) from a Rolls Royce RB211 variant civil jet engine. The ring you see at about 2/3 radial position of the blades are so called midspan shrouds. They are supposed to absorb any shocks and vibrations and give the fan more strength. Modern high tech engines don't have these because they are aerodynamically unwanted. I suppose they serve a supporting purpose on the mere cufflink as well. :)
The fan has a diameter of 20mm. The pin is 15mm long and 2,5mm thick. The blades have a thickness of 0.55mm. The back is 11mm in diameter, which is the size of a usual button.