This is a remix to @davidd's excellent multiconnect system. This large thread connector connects to the Multiboard system firmly while allowing you to quickly add and remove multiconnect-compatible mounts. When threaded fully and into a vertical position, only one connector is needed (also helpful when only one connector is possible).

Differences from the large thread, side-printed, tool connector:

• Elongated to prevent rotation (when fully threaded) for single-connector mount scenarios.
• Retains the indent for locking and tool slots for tool removal.
• Side-print compatible for strength.
• Bidirectional to avoid over-torquing to reach the proper orientation (indent on each side for locking regardless of direction)
• You can also use your mounts as a tool (rotation clearance permitting)

I recommend 20% infill. No supports needed.

Credit to @DavidD for the Multiconnect system and Jonathan (KeepMaking) for creating multiboard