Update: I switched it back to work-in-progress because i will do an update on this with the dovetail-connection from version 1 x 18650 (no need for screws): http://www.thingiverse.com/thing:210538 Done. It is vaping! 2 x Batterie-Holder: http://www.conrad.de/ce/de/product/651027/?insert=05&insertNoDeeplink&productname=Keystone-Batteriehalter-Pin-Halter-fuer-18650-Zelle-18650-Zelle-L-x-B-x-H-77-x-2065-x-1486-mm 1 x Fire-Button: http://www.conrad.de/ce/de/product/700679/?insert=05&insertNoDeeplink&productname=Vandalismusgeschuetzter-Drucktaster-16-VDC-005-A-1-x-AusEin-MSW1201-tastend-1-St 2 x Up/Down-Button: http://www.conrad.de/ce/de/product/705338/?insert=05&insertNoDeeplink&productname=Drucktaster-12-VDC-005-A-1-x-AusEin-Namae-Electronics-JTP-1130L-tastend-1-St You need too: 1 x 510-Connector 2 x M4/40 + 2 x M4 Washers 1 x Glass of an old Carto-Tank ToDo: Venting Holes :-) I love the Lanyard-Hole most :-)