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(A) 3D model of the base frame. (B) Actual 3D printed base frame, with breakaway supports (arrowheads) still attached. (C) Close-up of the 3D printed base frame with breakaway supports removed. Note the raised zip-tie anchors (arrows) for correct positioning of coil rows and wire management. (D) Diagram of 3-axial Helmholtz coil showing the three coil pairs for the three axes (x in blue, y in red, and z in grey).
