Replacement extruder gear for RepRapPro Ormerod. Modified from iamburny's design, meant to work with the small gear from that. Should use a bit less material and print cleaner and quicker, while being at least as strong as the original design.Should be easy enough to get to print. Reasonable slicer settings would be 3 perimeter layers, 3 top/bottom solid layers, and 0.2 infill (line, rectilinear or hex should all do nicely). Print the small gear from iamburny to go with this,