Red Tag - 05/18/25 06:41PM 3D Printing - Apollo Prusa MK3S+

Issue type: Equipment Problem
Area: 3D Printing
Equipment: Prusa MK3S+ (Please specify Apollo, Hermes, or Sunwukong)
Summary: Apollo error msg
Additional Info: Mintemp

Report generated from a filing. This report has also been sent to Asmbly staff, leadership, and space leads with any contact info that was provided. Provide additional photos or resources here to help. When the problem is resolved, ensure it is marked.

I replaced the failed molex microfit crimp connector for the thermistor on Apollo today and it’s currently printing well with no temperature issues.

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A member had another min temp error on Apollo. After the above mentioned print, the printer tossed a mintemp error upon finishing the print and moving the toolhead to a safe location. I replaced the connector a second time with better strain relief and it seemed to be ok. Either both of my crimps were bad (possible!) or there’s something else going on.

When working on the printer I tested the wire that goes from the toolhead to the printer board for continuity and it seemed fine, but I’m starting to suspect that there’s a failing wire in the bundle going back to the board that causes intermittent issues.

I’ll give it a look this Saturday if nobody else does first.

Found an inconsistent issue with the thermistor wire in the cable chain, spliced together a new wire and so far it’s behaving. Will poke at it more tomorrow.