extruder

[spanner]

Hi,
I'm very new to 3d printing but am getting there, the new problem I have is that when running I usually watch, but I have to move away at times to do other things, the problem I am having is that if the filament stops feeding for any reason it keeps printing, so that it is several steps above the print and it is ruined, what I would like to know is there a device that would stop the print if the filament stops, ie a motion detector working in reverse that cuts in when motion stops??. This problem has happened twice now both after about an hour printing ,a waste of time and material.
thanks spanner

[spanner]

HI All,
Just answering my own post. I have exactly what I was looking for on a site called rc-cam search the 3d print link
,, my next project