Unattended prints have their drawbacks!

A Problem

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Using ABSPrusa Mendel Zaphod with Pronterface and slic3r 1.3.0. Printing well with 3mm PLA and ABS through 2 x J Head Mk IV b and Wade Geared Exruders. Controlled using RAMPS1.4 board running Marlin_v1.1.9

Haha, I've had that happen before. Even worse than that. Back before stepper extruders when the extruder was on/off, and Windows decided to update in the middle of the print. Of course the print stopped with the extruder running, so it just kept going and going. Made a huge mess of plastic.

Well, that's horrifying. I haven't had that problem yet.