UPDATE: 4/2/15: Added slot for lighting PCB and moved power tube mounting holes. Removed shim. You will need a new base for the power tubes at: http://www.thingiverse.com/thing:547986 3D printable Ghostbusters Proton Pack power cell based on plans Steffan Otto has kindly put online: http://www.gbfans.com/wiki/Stefan_Otto%27s_Prop_Plans This is a full size version of the Power Cell, and has mounting holes underneath. Use four x #4 self tapping screws to mount. Use epoxy resin to attach the four small rectangles to the top of the cell. Update 16/11/2014: The power cell was too short by 8.7mm. This is only an aesthetic issue, but this has been corrected in PowerCell2.stl. If you printed the previous version, and want the correct height, print powershim.stl and epoxy into place.. 1) Print. 2) Glue rib tops into place.