Hole resolution looks good, but the surface near them does not look that good. Wonder how tight the holes would be if the tiny holes were last out of the vat?
Also, while looking at your laser spot something occured to me like a poof! (or epoofiny, for the full technical term), which was triggered by you saying
I guess seeing both 'flair' and 'rabbit ears' together in a short, sweet sentence clicked for me.
What if what we're seeing in these 'spot shots' is somehow really just a function of persistence of vision? My intuitive understanding of how a galvo operates is that there are two competing and opposing electrical forces on the galvo for it to target a coordinate, and maintain directionalty (e.g. supply and restrict current). Is it possible that the signals to both sides to do that are ocillating, or vibrating such that the actual dot is simply spending most of it's time on it's target location, but the frequency is jiggling the beam outside that ideal for a frequency-related timeframe?
If anything close to that were true, it seems like a test would be to add some mass to the gavo mirrors to see if the spot changes. Could it be weird if the frequecy of it all was close to the resonant frequency of the mirrors, like an unintended feedback loop? (or hopefully not quite like this: https://www.youtube.com/watch?v=3mclp9QmCGs)