Print quailty following updates

[billtodd]

How old is--or more importantly, how many operating hours on--your printer? On the original Mars the LCD lasts approximately 250 to 300 hours before the "liquid" breaks down and no longer twists as it should--read more about this here

I've only used couple of litres resin , so not many hours at all.

I'm still puzzled by the apparent coincidence with the firmware update: I ran out of black resin and, while waiting for a new bottle to arrive, updated the firmware . The very next print was a mess of stringing an lines , I thought is was the v1.9 Chitubox settings at fault (several new features that might need tuning) ,  it was only after a couple more messy prints that I noticed the lines were visible on the LCD in 'exposure' and 'clean' modes .

Interestingly , the test prints using the sliced code from v1.8.1 were much cleaner (although also had the line fault) .

this picture is of the build plate after a chtiubox v1.9 test print, notice how there appears to be an echo of the parts in the debris.     this doesn't happen with the same part sliced with the earlier version.