CEL Robox Z Axis Carriage (1st gen thin peg)

This is a replacement for a part which often broke during shipping of early CEL Robox 3d printers. This is for the thin peg (approx. 5 mm in diameter) found in those early Roboxes. CEL became aware of the problem and replaced with a peg part with larger diameter, which however involved replacement of also redesigned parts surrounding this carriage (namely the part which holds the ball bearing travelling along the Z axis on both ends of the X gantry).

I’ve modeled the part in Onshape (see here).