Abstract: At end cap construction forms part of an enclosure for a self-contained welding machine. The end cap construction comprises a control panel assembled to the back plane of an upright bezel. Triangular-shaped arms on the bezel fit into a corresponding triangular-shaped outline of the panel to add rigidity to the panel. The bezel has appreciable thickness between its back plane and a front plane. Control knobs on the control panel front surface are recessed from the bezel front plane and are thus protected by the bezel against damage. The bezel and panel have respective flanges that are fastened to top and side covers that complete the enclosure.