Hi Guys,
I've spent about a half-hour session with Trotec's excellent UK support and the problem is now 'fixed' - well, there is a solution (!)
They don't know why it has started but have had this issue reported by a few others.
Relatively quick fix:
Upgrade to new firmware 10.10 necessary.
As already noted by some of you guys, the laser as it slows or accelerates adjusts power to compensate.
In Material Settings - each setting has a drop-down at the end of the line. I've looked in here but not touched. See attached picture
The Correction value needs to be tweaked. Apparently, earlier versions of the firmware recognised values in here for cutting but not engraving.
It represents a minimum value that the laser power drops to and is a percentage of the laser power.
Recommended settings around 10%-25% - need to be played around with for EACH MATERIAL (which is a bit of a pain to have to go through everything)
As I found that cutting was also affected when I was cutting stencils over the weekend, I guess I may have to tweak all those too!
The idea is to set power & speed normally. Then adjust this correction value to bring the faded edges in to the same engraving depth as the centre (if that makes sense)
I have briefly tried it and at 30% the edges are definitely more deeply engraved that the middle now.. so it works!
Many thanks to all who gave advice.
Kind Regards
Tony
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