To use this oil lamp, you'll need:
A wick - I used cotton string about 1/8" thick.
A wick holder - I used a 6-32 stainless T-nut that I got at an Ace Hardware for $.74. Anything will work that is clean metal, about 1/8" diameter inside and 3/16" diameter outside, with a flange.
Fuel - I used olive oil, any vegetable oil will do.
I made an Instructable with more details.
A delightful surface: the gyroid put through a simple inverse transformation. It's ellipsoidal on the outside, and there is a sphere taken out of the center, which is difficult to see; for otherwise it would be infinitely tiny inside, and therefore unprintable.
The Schwartz D ("Diamond") surface is a triply periodic minimal surface, like the Gyroid. Here it's been translated in both normal directions, and one of the two resulting (identical!) surfaces networked. Another Schwarz surface is in metal here: http://bathsheba.com/math/schwarzd.
I'm a designer for 3D printing, here are some sculptures and math models. In sizes from jewelry to handheld sculpture, they're a mix of geometry, computation and hand drawing.
Some are exclusive to Shapeways, others are also on my main site at http://bathsheba.com.
Thanks for visiting! These are my happy places, I hope you like them too.