Takes a 100mm x 12.5mm cylindrical candle and is meant to be held in the hands. Candle screws into a thread at the base of the cup cutting a path in the wax to hold the candle firm. The cup catches spent wax as the candle burns.

[Edit]: I changed the stl file so the candleholder prints from base up. It now prints in half the time without supports and less material. I use a 5mm 1 layer skirt\brim to anchor the base however it may not be required either depending on your bed adhesion.