250mm motor to motor quadcopter frame. Based on the DJI Flame Wheel frame.This is a 250mm M2M quadcopter frame. It is designed in a flame wheel style. With 25% infill and 2 perimiters and 2 top and bottom layers the frame weighs in a t 45 grams (PLA). It is quite stiff and should hold up well. It will require 12 M3 or 4-40 screws and nuts for assembly. If you use nylon screws then you will be able to cut them flush to the frame. Otherwise you'll need 8X 8mm screws and 4X 25mm screws. This frame was designed in SolidWorks and then repaired in Netfabb to ensure all parts are perfectly manifold.