Designing the master sketch, creating a 3.5 inch quad with removeable ducts, i’ve created the master sketch which will be the base for everything. only one half of the frame has to be designed so i can just mirror it later, Il likely also add some more mounting holes for vtx, standoffs and other things but this is basically the final form of the master sketch, we have 8mm arms and 20x20 mounting for the stack.

the arms will likely be extruded to 4-6mm for durability