I found another old thread mentioning something similar to what I am experiencing, but it never came to a conclusion so I am making a new thread. (old one Ramp mode problem)
I recently aquired a China, RUIDA 6445 1000x600 white blue laser.
Since my wife is an avid Scrapbooking-addict i figured I would make her some stamps and started experimenting with the Ramp Mode. I started to notice something wierd when using Ramp mode that maybe someone can explain?
It seems that if i use a Min-power less than my laser Tube lower ignition power (it starts to ignite at 6.5%) it makes it seem almost that scanning offset is wrong.
Excuse the poor image and stamp quality, it was just quickly made to show the difference on the line finnish. The line on the left is scanned with 0% min power (55% max), and the one on the right with 10%, otherwise they are identical.
It is no real issue that i have to set the min power a bit higher, but I just want to understand why. Logic tells me that the ramp feature should be symmetric and even if the laser is not fired under 7% it should not be fired either way, wich would result a straight line anyway, but it seems it is just not fired on the one direction.
(Edit: Actually not direction, it must be either when the laser is turning on or when it is turning off since it shows on both sides…)
Attaching the lightburn testfile…
StampRampTest.lbrn (9.9 KB)