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M2 DIY Thermistor Rebuild: Autopsy

Not much to my surprise, my hack-job thermistor rebuild went bad:

M2 - thermistor - assembly 2

M2 – thermistor – assembly 2

Having nothing to lose, I heated the brass tube over a butane flame to wreck the epoxy, which blew out with a satisfactory bang and filled the Basement Laboratory with The Big Stink.

Much to my surprise, the active ingredient still worked:

M2 DIY thermistor corpse

M2 DIY thermistor corpse

The multimeter reported absolutely no intermittent dropouts for as long as I was willing to watch the trace while doing other things:

DIY Thermistor Autopsy - Resistance Trend

DIY Thermistor Autopsy – Resistance Trend

So it must be my crappy soldering technique.

A brace of real M2 thermistors will arrive shortly …

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  1. Makergear M2: Nozzle Z Offset Recalibration | The Smell of Molten Projects in the Morning
  2. Tour Easy Daytime Running Light: First Fracture | The Smell of Molten Projects in the Morning

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