In addition to the 3D printed parts, you will also need: - Plastic tube (eg. from a PET plastic bottle, the standard .stl files are for a 62 mm outer diameter) - 6x M3x10mm countersunk screws - 6x M3 nuts - 2x M3x16 countersunk screws - 2x M3 brass inserts - 3x white LED and some superglue to mount them - 1x Joule Thief with battery holder (but with thinner wire and a lot more windings on the coil)