i am using the Repetier Host with Slicer.... and when it shows a job completeion timing to be 2 hours 30 mins the job actually gets over around 3 hours 40 mins...
people keep changing the estimation because people keep complaining that its never right...
It will never be correct unless you actually do a emulated run on the entire gcode emulating all machine settings.
This will of course take time and people don't want to wait either
