Bike Helmet Flashlight Holder Adapter to mount a flashlight to a bike helmet. Mostly parametric. Shape is optimized for a ThruNite TN12 others will probably also fit as well. To build this you need a velcro fastener as well as some rubber 2mm thick pieces to increase friction. I glued them to the upper side and the lower side. Bug: I forgot to model the belt-clip. Workaround is to use a saw later on and cut 5mm deep slots. Licensed under Creative Commons Attribution-ShareAlike: CC BY-SA https:creativecommons.org/licenses/by-sa/4.0/ Changelog: 0.04 Fixed diameter of flashlight; reduced size; additional chamfer 0.05 Fixed wrong word Phase -> Chamfer