MC4 style connector spanners for solar

MC4 style connectors are commonly used to hook up domestic solar panels.

These connectors require tools to assemble, dis-assemble and to disconnect them, and are frequently sold with a pair of flimsy plastic spanners for this.

The chunky hand tools offered here replace the flimsy spanners.

MC4 connectors lock together, and the printable separator is slid in to release mated pairs for disconnection (it pushes the locking tangs out of the way).

To tighten (or remove) the MC4 strain-relief-and-seal nut (for either male or female connector), one of the nut spanners is slid onto the nut end and one of the body spanners is slid onto the body end. They are then twisted tight by hand
The strain relief spanner has a slot in so that it can be removed from the cable after assembly. 

The two nut spanners are an 18mm hex type and a 19mm round type. 

The two body spanners both have a 19mm diameter section with an 11mm wide rectangular restriction (with subtle differences), but one has a ~13.6mm inner diameter and the other has a ~15mm inner diameter

Print the spanners with either flat face on the bed. 
Print the separator with the flattest face on the bed 
No supports needed

Printed in PLA and PETg on a Prusa Mini with '0.2mm Structural' settings
PETg is recommended as it is unlikely to warp in a hot vehicle - the designs allow for the reduced stiffness of PETg. 

MC4 connections are not covered by a standard, and are either the original Staubli (aka Multi-Contact) type, or copies that can vary in their details. The spanners above were developed on a set of cheap un-branded copies (hex nut, 14mm body), and a set of professional-grade MC4s (19mm round nut and 15mm diameter). Please get in touch below if you find another variant. 

Note: nothing here replaces the crimping pliers that are essential to attach MC4 connector metal parts to cables. 
Safety note - manufacturers recommend that MC4-style connectors are never disconnected while carrying power.