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 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.
This model was designed for a ceramic material that is no longer available. I have not at this writing tested it in Shapeways' new ceramic material. If this is something you'd like to see back on sale, by all means leave a comment.