Sturdy Kossel Z-Probe Retractor

The Z probe retractor supplied by the retailer did not work well at all and broke after I bumped into it while working on the bed clips (see second photo), so I quickly drew up a replacement in TinkerCAD and so far it works like a charm :-)

- larger and sturdier than the original
- attached by two screws instead of one
- dimple to prevent sideways movement of the probe