It would be great to be able to start back at a particular layer and begin again, I know this is asking too much. So the alternative is to integrate a filament monitor that would pause the system and save hours of print time and frustration. Toybuilder Labs has a Tunell Filament Monitor that they claim:
The Tunell Monitor uses a mechanical 24 PPR (positions-per-revolution) encoder to detect filament travel as you print. If the filament has stopped moving for longer than the (adjustable) time-out period, a fault signal is sent to your printer.
https://www.toybuilderlabs.com/products ... nt-monitor
It is a cheap upgrade, if it can be made to work. Anyone have any solutions for this problem?